By Admin
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Mind Teasers : Find the next number in series

Difficulty Popularity

Can you find next number in tricky mathematical series below?

111 , 113 , 117 , 119 , 123 , 137 ?

  • Views : 50k+
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Mind Teasers : Worlds Hardest Brain Teaser

Difficulty Popularity

A mastermind organized a quiz competition in which six selected candidates were invite namely James Hunt, Ruxandra Bar, Sophia Connors, David Finch, Fred Odea and Brian Miller. A 'special puzzle' was asked to all of them. The first one to answer it was promised for a big award.

After that, the candidates were offered the meal before the mastermind stood up to announce the much awaited result. He started announcing:

'Ok now everybody!'
'The winner of…..'
'The Hardest Riddle Ever Event.'

And then he smiled. All the candidates understood who won.

Do you know who won ?

By Admin
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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

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

Mind Teasers : Measure Water Supply Brain Teaser

Difficulty Popularity

You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

  • 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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  • Sol Viewed : 20k+

Mind Teasers : Hard Chess Puzzle Problem

Difficulty Popularity

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

How can you do this ?

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  • Sol Viewed : 20k+

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?

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

Mind Teasers : Colditz Pascal Prison Escape Puzzle

Difficulty Popularity

Two world's famous prisoners 'Colditz' and 'Pascal' are locked in a cell.
They plan to escape from the cell.
They noticed there is an open window at 40 feet above the ground level.
Both of them tried very hard but are never able to reach there.

Then both of them decided to plan to escape by a tunnel and they start digging out.
After digging for just 5 days, Colditz and Pascal comes out with the much more easier plan than tunneling and they escaped.

what was the plan ?

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

Mind Teasers : Math Trick Question

Difficulty Popularity

1 pound = 100 penny
= 10 penny x 10 penny
= 1/10 pound x 1/10 pound
= 1/100 pound
= 1 penny

=> 1 pound = 1 penny

Solve this math trick question ?

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

Mind Teasers : Most Popular Logical Puzzle

Difficulty Popularity

Outside a room there are three light switches. One of switch is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb ??

  • Views : 90k+
  • Sol Viewed : 30k+

Mind Teasers : Extremely Hard Civil Services Problem

Difficulty Popularity

( ) + ( ) + ( ) + ( ) + ( ) = 30
This is what you have for equation. The following are the numbers that you can use to fill in the brackets:
1, 3, 5, 7, 9, 11, 13 and 15

You can repeat the numbers if required. The resulting sum should be 30.

This question appeared in the UPSC final examination in December 2013. Out of all the people who appeared, only one guy was able to solve this namely Gaurav Agarwal.

Can you solve it?

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