• Views : 70k+
  • Sol Viewed : 20k+

Mind Twisting Questions #1 - Pirates Probability Brain Teaser

Difficulty Popularity

You are stuck with the pirates who might even kill you on board. They give you a chance to survive. There are hundred black rocks and hundred red rocks. There are two empty sacks which are labelled as heads and tails respectively. You have to divide the rocks in two bags as per your wish. Then a fair coin will be flipped. If its heads, you will have to pick a rock on random from the sack labelled heads and if its tails, you will pick up from the tails sack. If you pick up a black rock, you will be freed and if you pick up a red rock, you will be killed.

How will you distribute the rocks so that your chances of survival are the best?

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

Mind Twisting Questions #2 - Weight Balance Riddle

Difficulty Popularity

You can place weights on both side of weighing balance and you need to measure all weights between 1 and 1000. For example if you have weights 1 and 3,now you can measure 1,3 and 4 like earlier case, and also you can measure 2,by placing 3 on one side and 1 on the side which contain the substance to be weighed. So question again is how many minimum weights and of what denominations you need to measure all weights from 1kg to 1000kg.

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

Mind Twisting Questions #3 - 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 ?

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

Mind Twisting Questions #4 - Maths Logical Problem

Difficulty Popularity

The digits 0-9(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers.

How many of these numbers are prime ?

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

Mind Twisting Questions #5 - Hard Chess Puzzle Problem

Difficulty Popularity

Your pieces are white.
You need to win in half a move.

How can you do this ?


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

Mind Twisting Questions #6 - Detective Hercule Murder Mystery Puzzle

Difficulty Popularity

Hercule Poirot Detective reviewed the information they had on the case so far.

A lady named 'monica' was found shot and Hercule already had a list of suspects : rooney , torres , dabid , messi , ronaldo
Killer is a fan of Hercule and chalenge him by leaving notes at various places.

# The first was found in a drawing room.
# The second was found in an art room.
# The third was in a bed room.
# the fourth in an ice-cream room.
# The fifth at the desk room

All of the notes read the same thing, 'The clues are where you find the notes.' Still , nothing was found anywhere.
Hercule Poirot pause for a moment and den arrested the killer. Who was the killer ?

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

Mind Twisting Questions #7 - Best Picture Brain Teaser

Difficulty Popularity

Seeing the picture, can you identify in which direction is it going - left or right?

Keep in mind that the bus is moving in UK

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

Mind Twisting Questions #8 - Logical Maths Gold Bar Brain Teaser

Difficulty Popularity

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

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

Mind Twisting Questions #9 - Unsolvable Problem

Difficulty Popularity

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

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

Mind Twisting Questions #10 - Dirt Hole Tricky Riddle

Difficulty Popularity

How many cubic meters of dirt are in a hole of 20 meter long and 30 meter wide.

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