## Puzzle | 1000 light bulbs switched on/off by 1000 persons passing by

There are 1000 light bulbs and 1000 persons. All light bulbs are initially off. Person 1 goes flipping light bulb 1, 2, 3, 4, …… Read More »

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- Puzzle | 1000 light bulbs switched on/off by 1000 persons passing by

There are 1000 light bulbs and 1000 persons. All light bulbs are initially off. Person 1 goes flipping light bulb 1, 2, 3, 4, …… Read More »

50 coins are lined up on a table (initially all heads facing upwards). 50 people pass from the coins one by one in the following… Read More »

On an Island, there is an airport that has an unlimited number of identical air-planes. Each air-plane has a fuel capacity to allow it to… Read More »

Lateral thinking is the most interesting test module of tcs digital hiring process. Problem: Join all nine dots by drawing minimum number of straight lines.… Read More »

Lateral thinking is the most interesting test module of tcs digital hiring process. Problem: Move 3 matchsticks from the given set of matchsticks arranged as… Read More »

Question: In the middle of a round pool lies a beautiful water lily. The water lily doubles in size every day. After exactly 20 days,… Read More »

A solid, n-inch cube of wood is coated with blue paint on all six sides. Then the cube is cut into smaller one-inch cubes. These… Read More »

A lizard is present on one corner of cube, It wants to reach diagonally opposite corner of cube. You have to calculate minimum distance lizard… Read More »

Given a square having a side of length L. Another square form inside the first square by joining midpoint of the side of the first… Read More »

Given 6 point inside a square of side 10cm, what is the probability that their exist at least two points whose distance is less than… Read More »

A Geek is about to get a plane to Hyderabad. Geek wants to know if it’s raining. Geek calls 3 random friends staying at Hyderabad… Read More »

There are 10 robbers named as’A’, ‘B’, ‘C’, ‘D’, ‘E’, ‘F’, ‘G’, ‘H’, ‘I’, ‘J’ they stole some coins from a bank and they decided… Read More »

Ram and Shyam were selling chocolates. Ram was selling at the rate of 2 pieces/rupee and Shyam was selling at the rate of 3 pieces/rupee.… Read More »

Geek got kidnapped by a gangster. The Gangster puts two bullets in consecutive order in an empty six-round revolver, spins it, points it at her… Read More »

There are 10 black socks and 10 white socks in a drawer. Socks of the same color are identical but not allowed to look into… Read More »