### #1 - Logic Thinking Puzzle

At a restaurant downtown, Mr. Red, Mr. Blue, and Mr. White meet for lunch. Under their coats they are wearing either a red, blue, or white shirt.Mr. Blue says, 'Hey, did you notice we are all wearing different colored shirts from our names?' The man wearing the white shirt says, 'Wow, Mr. Blue, that's right!'
Can you tell who is wearing what color shirt?

Blue could only be wearing white or red and we know that there is already someone else wearing the white shirt so Mr. Blue could only be wearing the red shirt.

Mr. White could have only been wearing a blue or a red shirt, and red is already taken, so Mr. White is wearing a blue shirt.

Mr. Red now has to be wearing a white shirt.

### #2 - Logic Interview Question

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its color and put it back into the box, without seeing the color of the other ball.

How many such operations are necessary to correctly label the boxes?

Just One!

Because we know all labels are wrong.
So the BW box must be either BB or WW. Selecting one ball from BW will let you know which.
And the other two boxes can then be worked out logically.

### #3 - Number Fact Puzzle

The square of the number 111,111,111 is amazing.Whats that ?

12,345,678,987,654,321 Amazing :-)

### #4 - Murder Mystery Problem

One evening there was a murder in the home of married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

mother

We know from (3) that the youngest person was not the victim, from (4) that the youngest person was not the helper and from (6) that the youngest person was not the killer. The youngest person can only have been the witness therefore. If we make up a chart there are now three possible combinations:

Oldest person (father) H H M

Next to oldest (mother) V M H

Next to youngest (son) M V V

Youngest (daughter) W W W

(H = Helper ; V = Victim ; M = Murderer ; W = Witness)

We can work out from (5) that the father was the oldest, from (2) that the youngest person must have been the daughter. Therefore the next to the youngest must have been the son and the next to the oldest, the mother.

Of three possibilities: the first is impossible (from (3) – the youngest person and the victim were of different sexes); the third is also impossible (from (1) – the witness and the helper were of different sexes). Therefore only the second possibility holds – and the mother was the murderess.

### #5 - Trick Teaser Problem

Twins(Adarsh and Anupam) were born in May but their birthday is in June.hows this possible ?

May is a town

### #6 - Mathematical Logic Puzzle

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

188 - 88

### #7 - Complicated Riddle

If two's company, and three's a crowd, then whats four and five ?

Nine

### #8 - Logical Thinking Puzzle

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

NONE, holes are empty

### #9 - Math Logic Puzzle

In a guess game , five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed as 22 , 24, 29 , 33 , 38, but none of guess was right.The guesses were off by 1, 8, 6, 3, and 8 (in a random order).

From this information, can you determine the number of apples in a basket ?

30 apples

22(by 8) , 24(by 6) , 29(by 1) , 33(by 3) , 38(by 8)

### #10 - Analytical Maths Riddle

Can you find four consecutive prime numbers that add up to 220?

47 + 53 + 59 + 61 = 220