• Views : 90k+
  • Sol Viewed : 30k+

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

Discussion
Suggestions
By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Pizza Cost Math Brain Teaser

Difficulty Popularity

Jasmine, Thibault, and Noah were having a night out and decided to order a pizza for $10. It turned out that Jasmine and Thibault were hungrier than Noah. They both ate 6 slices a piece, and Noah got to eat just 2 slices.

Now they want to do a fair split of money. The problem is that none of them have coins with them. Thus, they want to round off the cost to nearest dollar.

What will be the correct way to do it?

What if the pizza's cost was $11?

  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Tricky Logic Brain Teaser

Difficulty Popularity

Alan is an honest person who never speaks a lie. He thinks of a number among 1, 2 and 3. Now, you can ask him only one question and that too for which the answer that you will receive will be in the form of yes, no or don't know. But he will reply only truth fully.

What will you ask from his so that you can know the number he is thinking of?

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Save Death Penalty Brain Teaser

Difficulty Popularity

A man committed a felony. As per the rules of the empire, the king decided to sentence him to death. However, he gave the man a choice; a choice to decide which way he wanted to die.

The man was quite smart and he said something, which saved him from his death. What do you think he must have said?

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

By Admin
  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : 4 + 9 != 13

Difficulty Popularity

If the following is true, can you find the value of (4 + 9)?

7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

  • Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Guard Door Riddle

Difficulty Popularity

You are in a strange place which is guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there.
What should you ask?

By Admin
  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : The Better Proposal Puzzle

Difficulty Popularity

A 12-year footballer Lavy was offered a contract with a club name "Flyball" that if he will practice 1 hour extra after school he will be offered 11$ after every week.
Lavy, however, suggested an alternative paid method in which
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till 11th day.

Should the club accept the offer of Lavy?

  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Draw Direction Problem

Difficulty Popularity

B is to the North-East of D; A is to the North-East of C; C is to the West of D; E is to the South-West of D and to the South of C; and A is to the north of D and in line with B.

Can you find out in which direction of E is B located?

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Tricky Password Mystery Problem

Difficulty Popularity

A brother wants to use his brother's desktop computer. When he opens it, he finds out that it is password protected. Now, he clicks on the hint and the following appears in front of him:

1 Jug 2 Birthdays 3 Fights 4 Cars 2 Laptops 1 Watch

He is left confused entirely. He has no clue. Can you help him with the password?

  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : May The Fastest Car Win

Difficulty Popularity

John is out with his class of 25 boys to a local park. Each guy has a remote controlled car with them. The park has a racetrack that allows 5 cars to be raced at once. Their teacher, Mr. Ted, declares that the top three fastest cars get ice cream.

How many races are required to determine the 3 fastest cars?

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