Puzzle 23

Hi.

Well, my competition presentation today wasn't as well as it planned out to be... oh well, just hope we get into the finals and better luck next year!

Now for Puzzle 23!

ILLOGICAL LOGIC

Difficulty: Hard

Since Joyce likes creating equations that are illogical, I shall create one illogical puzzle as well!


A recent survey by a peanut butter company yielded the following results:

• The people surveyed prefered to spread jam on bread than to spread anything else.


• But the same group of people would rather have peanut butter spread on bread than to just have plain bread.

By using logic and only the information from the above 2 points, prove that the survey is actually showing that the people surveyed prefer peanut butter to jam.


Now for the answer to Puzzle 22... drag your mouse over the empty space below to reveal the answer!

Both Classmate A and B (A.K.A Sherlyn and Chan Ming) have 1/6 chance of getting the dolphin soft toy.

Obviously, Sherlyn has to pick at random 1 out of 6 soft toys, hence she will have 1/6 chance of getting the dolphin soft toy. That means that she has 5/6 chance of not getting the soft toy.

Now, Chan Ming can only get the dolphin soft toy if Sherlyn didn't pick it during her turn. If Sherlyn didn't pick the dolphin soft toy, Chan Ming has 1/5 chance of getting the soft toy. However, Chan Ming having 1/5 chance of getting the dolphin soft toy only happens if Sherlyn didn't pick it during her turn, and the chance of that happening is 5/6.

Hence, Chan Ming has 1/5 X 5/6 = 1/6 chance of getting the dolphin soft toy!

It might be a little hard to digest, so perhaps you should draw a diagram to help you understand it better. :)

:)
Glen

Equation of the Day 23/8/11

Hello :)

Today is Marcus's lucky day :) Got called 3-4 times during Chinese LOL.

Okay now for the Equation of the Day :)

No offence meant.

Ice skating = cold = heartless = dead = useless = throw away = trash = stinky = smelly = bob = noob :)

LOL

Okay remember to co-operate for the class outing planning :)

---

Joyce

Reminder :)

Hello peepo :DDD

In case you guys have not noticed, charlene and i have each sent you a survey (her's regarding the class outing next week and mine regarding our year-end chalet. YAY~). Pls do the surveys if you have not done it (esp charlene's one, as the class outing will be on the Monday after next and she'll need time to plan). As for the chalet, we will need to book ASAP or the places might be fully booked :x Thanks for your help :)

YAY! class outing and chalet woo hoo~ Lol randomness xD

The one dat loves kejuju,
Sherlyn Lim

hello lol

okok so after some discussion for phototaking (ok not really discussion), everyone please bring:

class tee (since it takes a long time to change, we will do the wear-over-and-fold-sleeve method which all of us did when we first got the shirt)

so yah. that's all for that. and i think we'll be taking with soft toys?
anything to add?

okok second point. please remember to write the notes :) shall not say it out loud in case people can see :D

ENJOY YOUR WEEKENDS :D

oh and there's a surprise for everyone on monday from some of our classmates so yupp :)

---

Joyce

Equation of the Day :) 18/8/11

Hmmmm.... since Glen has mentioned about the craze over soft toys, I shall do something about that too.

Soft toys = fluffy = fur = dog = bulldog = fierce = violent = not fun = no one play = outdated = not for us = reverse psychology - ALL THE MORE WE WANT IT = very fun :)

Jiayou for EOYs which are less than 2 months away :)

---

Joyce

shall continue making RANDOM equations

HELLO

HI glen! You're back!
BLOG UPDATE 18/6/11
1. CTs
Yay! They are over :) But then, got EOY. Better study.

2. Photo taking
Who wanna discuss the poses: put in the comments please. Remember your tie next tuesday!

3. Class league
Keep class clean, do well for the various competitions etc.
Hope we win the math one!! :D

4. My brilliant idea.
ya, how bout a game on the blog. maybe abt catching that non-1k?
im planning a board game on a grid. ya, i will think more bout it. should be ready soon.

Puzzle 21

Hi.

Back after a super long and unbelievably mentally draining test schedule...
Sianz... Just hope everyone does well for the CTs... :)

Requesting to "remove" some parts of the superficial whiteboard at the back of the class to make space for some of the mini-puzzles. Apparently nobody is updating it.

Alright, since some people are starting to get bored of studying (including me) I shall continue my puzzle posts. Again, please post your answers as comments! :D

LUCK AND PROBABILITY (PART 3)

Difficulty: Medium

Due to the latest class frenzy over soft toys, I have decided to make this puzzle about them.


As you know, there are a number of soft toys on the shelf at the back of the classroom. There are 6 soft toys there.

Classmate A, let's call her Sherlyn for simplicity, wants the dolphin soft toy. Classmate B, let's call her Chan Ming again for simplicity, also wants the dolphin soft toy. Though, they will do fine with just any soft toy.

Sherlyn and Chan Ming then decide on a way to see who picks what soft toy.

They both close their eyes. The arrangement of the soft toys are mixed around. Then, with their eyes still closed, Sherlyn will first pick a soft toy at random, followed by Chan Ming.

Who has a greater chance of getting the dolphin soft toy, Sherlyn who went first, or Chan Ming who went last?


Yes, it looks quite hard to comprehend, but really the only parts you need to know is the 1st and last paragraph. The rest is just story.
Now for the answer to Puzzle 20, but you don't really need it right? In case you need it, drag your mouse over the empty space below to reveal the answer.

Yes, you should switch doors. Your chances of getting the wrong door halves if you decide to switch doors.

This is known as the Monty Hall Problem.

Initially, when you chose the 3 doors at random, there is 2/3 chance you picked the wrong door (since 2 of the doors are wrong). Hence, you if you switch, you can switch that wrong door for the correct one. Your chance of getting the correct door is 2/3, and the wrong one 1/3, hence the odds that you will end up with the wrong door halves!

Je suis crevé, j'ai trop de boulot.

:|
Glen

how sad :)

Hi again :D

I was bored and didn't want to mug for St. John so i decided to post again :)
Ahahaha i wanted to add in a cca board at the side over there >>>

BUT BUT BUT :(

I FAILED.

I realised that ever since I removed myself as an author from this blog, I couldn't post. Then now I'm an author

BUT BUT BUT :(

I STILL FAILED.

Cause now I can't edit the template cause I'm not an admin LOL

---

Since I'm super bored, I shall start the

Equation of the Day :D

-claps- LOL

Let's do something about homework!

Homework = practice = rack our brains = think a lot = write a lot = exercise our hand = healthy :D

HOMEWORK IS HEALTHY :D

But then, I guess 99% of the world's population will disagree!

"It's an IMPOSSIBLE equation D:<"

---

Joyce

:)

Hello :)

CTS ARE OVER :) CTS ARE OVER :)

But then again, there's the EOYs. How nice. Let's celebrate now, but still continue to study hard till EOYs are over :)

Then we'll scream and say "EOYs are over" loudly.

Jiayou for inter-class and everything else cause we will work hard together!
Hope everyone has had an awesome time since the CTs are over :)

Jiayou jiayou jiayou :)

---

Joyce

LOL CTs are oveh

YAY

HIYAS PPL hu faithfuly visit the blog everyday xD

LOL i dunno why im writing this but since im the awesome chairperson and this blog rocks i shall make a speech. LISTEN UP PPL

okay cough cough, first of all thanks to all the ppl like Ryan and Glen and many others hu have contributed to this blog in one way or another. Without u the blog wld be dead like Boxer._. Nxt, we are finaly at the top of the inter class comp so KEEP IT UP!!!! lets all do well and win and see 1KEJUJU on the plague thingy at the trophy thingy. :D

Okay, i noe some of u have said that there was a calculation error for the humanities quiz which i personally agree(shhhh...) so we can ask mr lim tmr during PC lesson. :D yay maybe can gain more marks.( fingers crossed) Than lets tok abt CT. I tink we will do well as a class but for math.......blehs. Thumbs up if u did not have time to finish it >.< Anyways, wishing everyone all the best for the CT and hopefully get good GPA in particular sean ang. Hope he'd get his macbook pro. <= rich O.O

Finally, the MOST IMPORTANT NEWS: MANCHESTER UNITED HAS WON THE FIRST MATCH WITH CHELSEA AND LIVERPOOL AND ARSENAL ALL DRAW!!!!!!!! WOOTS okay i noe the news abit late but hu cares. LETS ALL HOPE THEY WOULD CONTINUE TO WIN MORE MATCH AND GET 20TH TITLE SUPPORT MANCHESTER UNITED PPL SUPPORT ROONEY CHICHARITO CLEVERLEY FERDINAND VIDIC DE GAE ETC ETC ETC ETC YAY

LETS ALL DO WELL AS A CLASS AS 1KEJUJU

end of speech thank you thank you xD

Cheers,
Bryan xDDD

15th august 2011

Harros peepo :D

Today was our Science and Maths CT :/ sci was still ok but maths... KILLER!!! argh... haish... quite a few of us weren't able to finish(including me)... but well, wats over is over... hope dat tmr's paper will be for de better ><

During assembly, our class has fortunately(or isit unfortunately?) won THIRD in de humanities quiz! congrats to JIAXUAN and BRYAN :DDD you guys did gre8! hahas :D jiayous for more upcoming inter-class stuff :)

We also ALMOST got punished and had to stay back for 10mins but well, all misunderstandings have been cleared :D proud of ourselves for owning up :DDD Hahas xD We're not KEJUJU for nothing you know? hmmm... since si kai told me dat hes not coming up with a quote of de day today, this shall be our quote of de day:

"WE'RE NOT CALLED KEJUJU FOR NOTHING~"

Lols xD

hmmm... dun be too stressed up studying! de worst will be over in... 2 days? or counting in projects... practical... er... passage-based test... er... lols. Ms ling is right, DHS has no holidays :/

Anyway, these are some "tidbits" for your ears to enjoy :) so... ENJOY~


STORY OF US~


SKYSCRAPER~


LIVE LIKE WE'RE DYING~

Hope you guys enjoyed them :)

The one that loves kejuju,
Sherlyn :D

Just something :)

Heyys peepo :)

Two down, 4 to go... so many things, so little time. haish... heres jus sth for u to listen to to relax :) enjoy~


I NEED YOU NOW~


FROM THE BOTTOM OF MY BROKEN HEART~


PRICE TAG~

hope u liked them :)

PCD

Hi 1K!

Congratulations for Parent Child Day! The programme was more awesome than awesome!! What? Don't you think so? First the emcees... Bang Yong and Joyce... and Zoe... good jobby! Then the portfolios... clapclapclap .... nice presentation and nice drills! P.S. I luuuuuv that pic you all took of Mr Lim. harhar

oooo! and the vidis awesome rite, btw i hardly did anything... paiseipaisei, but i did help by staying back to clean the classroom for 2 days in the week! game masters u rock! The seats were also well planned.

Everyone good job done! keep it up! (:

Herp derp

Po the panda.

Random?

hiyas peepo :DD

wow. havent been on this blog for a super long time ._. glad to see that we're still "alive" :DDD time sure flies... it's gonna be the CT week soon ._. jiayous everyone :)

The one that loves kejuju

Puzzle 20

Hi!

I'm creating an archive for my puzzles, so you can see all the past puzzles! Hope you don't mind the extra sidebar content...

Anyway if it gets too long I'll try to minimize it.

Here's (the late) Puzzle 20!

LUCK AND PROBABILITY (PART 2)

Difficulty: Easy

Okay... I'll give you people a break since the previous puzzle was a "Very Hard" puzzle.

You are faced with 3 doors. One of them leads to the escape while the other 2 lead to a dead end. You are only allowed to open 1 door.

Suppose you pick one of the 3 doors. A door (which you didn't pick) that leads to a dead end is automatically opened for you. You are then allowed to switch your choice, to the other unopened door.

Should you change your mind? By how much does your chance of opening the wrong door change if you decided to switch doors?


Now for the answer to Puzzle 19...

1) It's surprisingly, 2/3, not 1/2!

There are only 3 faces which have circles on them: 2 of which are on the same card, while the last face with a circle has a cross marked on the other face. So, when you place the card face-up on the table, there's a 2/3 chance that the face facing you is one of the 2 faces with a circle that are on the same card. Hence, the answer is 2/3.

This is also known as the three-card swindle or the card version of Bertrand's box Paradox.

2) You'll most likely end up losing money :(

There's only 1/4 chance of you getting tails 2 times (NOT 1/3!). Hence, on average, for every $1.50 you give your friend, you get only $1.20 of it back.

No Joyce, you can't use any of these tricks to con people!

:)
Glen

okays i dunno what to put for the title so yea....

Anyways, regarding the class tee that we discussed this mornin, i had some fun to be honest.

But after a discussion wit mr lim with the seans, marcus and bangyong, we had came up with a design. We'll be showin u a sketch tmr mornin, so plsplspls try to come by 7:40! thanks!

Cheers,

Bryan

P.S. GET WELL SOON GLEN!WE MISS U

Puzzle 19

Hi!

Sigh... no one here as usual. :(
Moving on...

LUCK AND PROBABILITY (PART 1)

Difficulty: Very Hard


Don't worry, this isn't really that hard... probably.
There are a total of 2 questions to solve.

1) There are a total of 3 cards.

One of the cards has a circle marked on both sides.
The second card has a cross marked on both sides.
The last card has a circle marked on one side and a cross marked on the other side.

They are put into a box and mixed around. You randomly draw one of the cards and put it on a table. The side facing you has a circle marked on it.

What is the chance that the other side also has a circle marked on it?


2) You are playing a game with a friend. The game goes like this:

A coin is tossed. If it's heads, you must give your friend $0.50.
If it's tails, the coin is tossed a second time. Again, if it's heads, you must give your friend $0.50.
But, if it's tails again, your friend gives you $1.20.

If you play this game many times in a row, are you more likely to end up earning or losing money?


Now for the answer to puzzle 18...

The correct answer is surprisingly, E!

This puzzle has nothing to do with vocabulary. So it doesn't matter how easy it is to scatter the items listed in the choices.

Look more carefully at the words that make up the sentence again...

"I" has one letter.
"do" has 2 letters.
"not" has 3 letters.
"like" has 4 letters, and so on...

The number of letters in each word increases by one each time!
So, that means the missing word is made up of 8 letters, and the only choice that is made up of 8 letters is... broccolis!

:)
Glen

Puzzle 18

Hi!

FINALLY... the robotics competition we've been preparing so hard and long for is over!!!!
We didn't get into the semi-finals, however :(
Oh well, better luck next year!

Now for Puzzle 18...

VOCABULARY

Difficulty: Medium

How good do you think your vocab is? Good?
If so, you should have no problem figuring what should go into the blank in the following sentence...

I do not like those people leaving ______ scattered everywhere.

A) flour
B) water
C) seeds
D) dirt
E) broccolis
F) eggs
G) cabbages
H) rubbish

Which of the above choices should go into the blank in the sentence above?


Now for the answer to Puzzle 17... Drag your mouse over the empty space below to see the answer!

They are all misnomers (i.e. cannot be taken literally).
Still confused? Here's the explanation:

A shortbread is a type of cake or cookie (not a bread).
A spanish fly and firefly are both species of beetles (not flies).
A shooting star is a meteoroid (not a star).
Prairie dogs are rodents (not dogs).
Catgut is a cord made up of natural fibres in the intestines of sheep and goats, but never cats.
Komodo dragons are large lizards.
Pencil lead is made of graphite (not lead).

:)
Glen

Puzzle 17

Hi!

It's true that in DHS, there's no such thing as a holiday. I've been so busy lately... CCA training every weekday, IH meetings, poetry recital, not to mention the HW... :(

Frankly, I feel that normal school day now seems much less stressful...
Oh, and will someone please reinstall the cbox? Thanks!

Moving on...

WHAT'S IN COMMON?

Difficulty: Hard

Look at the following list of words.

Shortbread
Spanish fly
Shooting star
Prairie dog
Catgut
Firefly
Komodo dragon
Pencil lead

What do they have in common?


Now for the answers to Puzzle 16...

1. 6 kg
9kg divided by 1.5 (quarter of 6) gives you 6kg!

2. 8th.
If the 8th had gone bad, the person would have said "3 of the first 7 stingrays in the row have gone bad."

:|
Glen

song to share :)

hellos peepo~

just a song to share with you guys, a song loved by many :)

enjoy~



The one that loves kejuju,
Sherlyn Lim

:)

Hello!

Thanks Ryan for that wonderful video! (hmmm you guys should hear his recording. he was recording himself singing that.)

LOL and he records conversations and signs off with that.

Ok... I just cant stop laughing :) maybe cause im happy that IH is done. and that ryan was... nevermind, it makes me laugh again LOL

So... i strongly advice everyone to sing along with that song! :)

Hope to see you guys at class outing!

Joyce

Puzzle 16

Hi!

This blog's nearly dead... just hope more posts will appear after our class outing 9 June.
Moving right along...

THE BARBEQUE

Difficulty: Easy

It's 1N's class outing! In case, you don't remember, 1N was the other class I did counting for during the NAPFA 2.4km run. To thank me, they have invited me to their class party! :D
We went to BBQ at East Coast Park.


1. Trevor was assigned to bring all the BBQ food to the pit.
In case you don't remember who Trevor is, he's register no. 22 and he got almost the same timing as I did in the 2.4 km run.

Anyway, as he is slow, when he got to the BBQ pit, some of the food had gone bad, especially the seafood :(

When we measured the weight of food that had 'decomposed', we found that it was 9kg divided by quarter of the 'decomposed' food's weight.

So what is the weight of the food that had gone bad?


2. We then started to BBQ! The food was great!

But soon, it was time to barbeque the stingray. We then realised we had forgotten to throw out the 'decomposed' stingrays. They were all wrapped up in aluminium foil, so we couldn't tell which stingrays had gone bad. We couldn't unwrap them as well, since they might go bad when exposed to the air.

Then, someone remembered something about the 'decomposed' stingrays. He arranged all 15 of them, still wrapped in aluminium foil, in a row. Then he said, "3 of the first 8 stingrays in the row have gone bad."

Which one of the first 8 stingrays (the 1st/2nd/3rd etc.) in the row is absolutely sure to be good?


Okay, now here's the answer to Puzzle 15!

Positive/Negative infinity. Or simply put... Impossible.

Let's assume that the distance between his house and the school is 40km.
The time he will need to take to reach school is 1h.

The distance of half of his journey will be 20km.
Thus, to travel the first half of his journey at a speed of 20km/h, he will have to take 1h.

He has 1h -1h = 0h left to complete the remaining 20km. So, as you know, anything divided by zero is positive/negative infinity, so 20km divided 0h will give you a speed of positive/negative infinty km/h. You could also say it's impossible.

:)
Glen

Hiyas peepo :DDD

so... how are ur holidays? having fun? i've noticed that this blog is kinda dead so i decided to spice it up a little by telling u guys abt

The facebook fail

so yea..er...blog so dead...i so dead...hope it comes alive again...
yea so......the joke
~attempt at creating an fb acc~
(yes...it's THAT hard)
ok so...err...not that i want to...but some improtant fb info is posted there...must create liao
info...info... birthday is the most troublesome
link: "why should i provide this info (birthdate)"
i clicked it.
YOU MUST BE SIGNED IN TO SEE THIS PAGE!!! MUAHAHAHA
FAIL.

hahas

and so...
~attempt FAILED~


what abt the cca info

ASK MY FRIENDS TO PRINT SCREEN
(LOL)

the inactive one