Mind Teasers : What number should replace the question mark

Difficulty Popularity

Which number replaces the question mark in the picture below ?

category : SERIES | PICTURE

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Mind Teasers : Famous Elevator Riddle

Difficulty Popularity

Tanu lives on the 13th floor takes the elevator down to the ground floor every morning and goes to her office.

In the evening, when she comes back on a rainy day , or if there are other people around in the elevator, she goes to her 13th floor directly. Otherwise, she goes to the 1oth floor and walks up three flights of stairs to his apartment.

Whats the reason for her unusual behavior ?
category : LOGIC | MYSTERY

Mind Teasers : Brain Teasing Statement Puzzle

Difficulty Popularity

The question is simple, you have to find out who did it? However the way to the solution might be tricky and confusing. Just remember that only one of the statement is true and rest three are false.

1. Ms. Rihanna: 'Ms. Britney did it.'
2. Ms. Britney: 'Ms. Rihanna did it.'
3. Ms. Gwyneth: 'Ms. Britney’s telling the truth.'
4. Ms. Yoon: 'Ms. Gwyneth’s not lying.'
category : LOGIC

Mind Teasers : Probability To Choose Own Toy Brain Teaser

Difficulty Popularity

I bought three toys for my triplet boys (one for each). I placed the toys in the dark store. One by one each boy went to the store and pick the toy. What is the probability that no boy will choose his own toy?

Mind Teasers : Tricky Iq Question

Difficulty Popularity

In a jar, there are some orange candies and some strawberry candies. You pick up two candies at a time randomly. If the two candies are of same flavor, you throw them away and put a strawberry candy inside. If they are of opposite flavors, you throw them away and put an orange candy inside.

In such manner, you will be reducing the candies in the jar one at a time and will eventually be left with only one candy in the jar.

If you are told about the respective number of orange and strawberry candies at the outset, will it be feasible for you to predict the flavor of the final remaining candy ?
category : LOGIC

Mind Teasers : Famous Probability Puzzle

Difficulty Popularity

This is a famous probability puzzle in which you have to choose the correct answer at random from the four options below.
Can you tell us whats the probability of choosing correct answer in this random manner.

1) 1/4
2) 1/2
3) 1
4) 1/4

Mind Teasers : Logic Birthday Puzzle

Difficulty Popularity

For my anniversary, I decided to surprise my wife. Since she is a voracious reader, I decided to collect a lot of books for her. On the first day of the month, I bought one book, on the second, I bought two and on the third, I bought three. This process went on till the anniversary and on the day, I had 276 books with me to gift her.

Can you calculate, on which day is our anniversary?
category : LOGIC | MATHS

Mind Teasers : The Elf Logical Puzzle

Difficulty Popularity

A wicked sorcerer felt enmity towards elf and thus he chooses four among the rest of the elf's and concealed them. The elves are concealed in the ground in a manner that apart from their head the rest of their body was underneath the ground. The elf's are unable to move their body and can only see in that direction that they are facing. All the elf's are concealed underground in such a way that they form a straight line and among those four elf's that are concealed underground one of the elf is detached form the other three elf's via wall. The entire elf's are in the same direction. The elf that is the furthest can only see the heads of its friends in front and a wall. The elf that is second last can only see one head of his friend and a wall. The second elf can only view the wall. The elf can see nothing.
The sorcerer understands the situation and tells the elf's that he has placed hats over their heads. Among the hats places two hat are blue and the other two are red. Among all the four elfs one of the elf has to guess that which colour hat is he wearing. If the elf answers correctly then he shall be set free or else he will have to dig beneath the ground till the very last.
category : LOGIC

Mind Teasers : Awesome Logic Brain Teaser

Difficulty Popularity

Q1. Find out the first question where the right answer is c)
a) Q3
b) Q4
c) Q1
d) Q2

Q2. Find out the first question where the right answer is a)
a) Q4
b) Q2
c) Q3
d) Q1

Q3. Find out the first question where the right answer is d)
a) Q1
b) Q2
c) Q4
d) Q3

Q4. Find out the first question where the right answer is b)
a) Q2
b) Q4
c) Q3
d) Q1
category : LOGIC

Mind Teasers : Floating Fish MatchStick Riddle

Difficulty Popularity

As shown in the image below, group of fishes are swimming from left to right. By moving just three matchsticks, can you make fishes from right to left?

Mind Teasers : Awesome Probability Logic Riddle

Difficulty Popularity

You need to divide 50 marbles(25-red and 25-blue) into two boxes such that the probability of picking red marble is maximized.

Following conditions need to hold true :
1. None of box is empty
2. All the marbles must be in one of two boxes.
category : LOGIC

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