IAS Interview Question

If it took eight men ten hours to build a wall, how long would it take four men to build it?




Similar Riddles

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Asked by Neha on 03 Aug 2023


Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

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What always comes into a house through the keyhole?

Asked by Neha on 08 Mar 2022


What number when divided in half becomes zero?

Asked by Neha on 20 Jul 2024

What makes this number unique: 8,549,176,320?

Asked by Neha on 08 Jul 2025

A spaceship was lost. The detective was given a piece of paper. This was the location of the spaceship! This is what the slip had scribbled on it:
Juice, Umbrella, Potato, Ice, Tomato, Elephant, Rice.

Where is the spaceship?

Asked by Neha on 19 Jan 2026


I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Asked by Neha on 14 May 2021

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Asked by Neha on 15 Oct 2024

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

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What can you see in the middle of March and April that you can never see in any other month?

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.