# Category Archives: Puzzles

## Puzzle 27 | (Hourglasses Puzzle)

Question: Measure 9 minutes from a 4 minutes hourglass and a 7 minutes hourglass? Answer: At 0 minutes: start both hourglasses at the same time.… Read More »

## Puzzle 26 | (Know Average Salary without Disclosing Individual Salaries)

Three Employees want to know average of their salaries. They are not allowed to share their individual salaries. Answer: 1) X adds a random number… Read More »

## Puzzle 25 | (Chessboard and dominos)

There is an 8 by 8 chessboard in which two diagonally opposite corners have been cut off.You are given 31 dominos, and a single domino… Read More »

## Puzzle 24 | (10 Coins Puzzle)

You are blindfolded and 10 coins are place in front of you on table. You are allowed to touch the coins, but can’t tell which… Read More »

## Puzzle 23 | (Days of month using 2 dice)

How can you represent days of month using two 6 sided dice? You can write one number on each face of the dice from 0… Read More »

## Puzzle 22 | (Maximum Chocolates)

You have 15 Rs with you. You go to a shop and shopkeeper tells you price as 1 Rs per chocolate. He also tells you… Read More »

## Puzzle 21 | (3 Ants and Triangle)

There are 3 ants sitting on three corners of a triangle. All ants randomly pick a direction and start moving along edge of the triangle.… Read More »

## Puzzle 20 | (5 Pirates and 100 Gold Coins)

There are 5 pirates, they must decide how to distribute 100 gold coins among them. The pirates have seniority levels, the senior-most is A, then… Read More »

## Puzzle 19 | (Poison and Rat)

There are 1000 wine bottles. One of the bottles contains poisoned wine. A rat dies after one hour of drinking the poisoned wine. How many… Read More »

## Puzzle 18 | (Torch and Bridge)

There are 4 persons (A, B, C and D) who want to cross a bridge in night. A takes 1 minute to cross the bridge.… Read More »

## Puzzle 17 | (Ratio of Boys and Girls in a Country where people want only boys)

In a country, all families want a boy. They keep having babies till a boy is born. What is the expected ratio of boys and… Read More »

## Puzzle 16 | (100 Doors)

There are 100 doors in a row, all doors are initially closed. A person walks through all doors multiple times and toggle (if open then… Read More »

## Puzzle 15 | (Camel and Banana Puzzle)

A person has 3000 bananas and a camel. The person wants to transport maximum number of bananas to a destination which is 1000 KMs away,… Read More »

## Puzzle 14 | (Strategy for a 2 Player Coin Game)

Consider a two player coin game where each player gets turn one by one. There is a row of even number of coins, and a… Read More »

## Puzzle 13 | (100 Prisoners with Red/Black Hats)

100 prisoners in jail are standing in a queue facing in one direction. Each prisoner is wearing a hat of color either black or red.… Read More »