Problems, Riddles and Brain Teasers

Admin Posts : 171 Join date : 2013-01-16 Age : 26

Periodically, I will post a problem that require some analyses to solve. If you wish to answer, Put the NUMBER of the joke before you answer.
Use your best judgement to answer! Some may be ambiguous, and some will have an answer.

#1

THE MONTY HALL PROBLEM.

Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?

ANSWER: (It is ambiguous)

#2
MATHEMATICS

Looking at an analogue clock... How many times per day does the hands (Min and hour) make a straight line?

Subject: Re: Problems, Riddles and Brain Teasers Sun Mar 31, 2013 10:33 pm

#1
there is no advantage to switching because no matter what there is a fifty-fifty chance the car will be behind the one you picked

Admin Posts : 171 Join date : 2013-01-16 Age : 26

#3

What is the probability of choosing the correct answer at random from the options below.

a) 1/4
b) 1/2
c) 1
d) 1/4

Subject: Re: Problems, Riddles and Brain Teasers Thu Apr 11, 2013 8:32 pm

Admin Posts : 81 Join date : 2012-12-16

#2

straight as in vertical and horizontal or can it be diagonal too?

Admin Posts : 171 Join date : 2013-01-16 Age : 26

Yes. Whenever the hands make a straight line.

Admin Posts : 171 Join date : 2013-01-16 Age : 26

4.

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that sum of number of each group is equal.

Note : 9 cannot be turned over to make it 6.

Admin Posts : 171 Join date : 2013-01-16 Age : 26

5. Where to build...?

Where on Earth, can you build a simple square house in which every window on every wall looks out to the south?

Subject: Re: Problems, Riddles and Brain Teasers Wed Apr 17, 2013 7:08 pm

5.

At the North Pole

Admin Posts : 171 Join date : 2013-01-16 Age : 26

6. What am I?

What demands and answer, but asks no questions?

Subject: Re: Problems, Riddles and Brain Teasers Fri Apr 19, 2013 6:36 am

a telephone

Posts : 52 Join date : 2013-01-18 Location : Dark Void

# 2

The answer is 22 times

Subject: Re: Problems, Riddles and Brain Teasers Wed Apr 24, 2013 8:25 pm

Base2 wrote:: #3

What is the probability of choosing the correct answer at random from the options below.

a) 1/4
b) 1/2
c) 1
d) 1/4

I think you created a paradox with that one.

If there weren't two 1/4s, then this problem would actually be solvable.

Admin Posts : 171 Join date : 2013-01-16 Age : 26

No. 7

The amount of water in a bucket decreased by 50%. What percentage must a guy add to it to retain its original volume?

Admin Posts : 171 Join date : 2013-01-16 Age : 26

[8]

Out of 40 people... 11 Have brothers, 15 have sisters, and 9 have both. How many people have neither of them?

Admin Posts : 171 Join date : 2013-01-16 Age : 26

(9)

In a tennis tournament, there is 50 players. How many matches does it take to determine the victor?

Admin Posts : 171 Join date : 2013-01-16 Age : 26

(10)
(Non Sequitur)

If the sun rises on a cloudy day in the Gobi Desert, how many potatoes will be grown in the northern quadrant of Ireland?

(11)
Non Sequitur

If a frog croaks 4 more times than the average frog, how many seconds will it take for a dial-up connection to connect to the internet?

(12)
Non Sequitur

If I hit a baseball up at 90 degrees with a 75 m/s initial velocity, how many terrible pop songs will be released in 30 weeks?

(13)
NS

If the date is Friday the 13th and all the planets align, what is the answer to 1 divided by 0?