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

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Asked by Neha on 09 May 2025


Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Asked by Neha on 18 Nov 2023

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Asked by Neha on 07 May 2024


Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Asked by Neha on 26 May 2023

What word is pronounced the same if you take away four of its five letters?

Asked by Neha on 20 Oct 2021

People put me on the table and cut me but do not eat me. What am I?

Asked by Neha on 09 Jul 2024


There is a place where if I stand up straight, I will still be considered sideways.

Asked by Neha on 05 May 2025

Which of the below owl is odd one out?

Find the odd

Asked by Neha on 22 May 2021

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Asked by Neha on 24 Aug 2024


What is the Surname of Barbie Doll?

Asked by Neha on 25 Jul 2023

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Amazing Facts

Jigsaw puzzles

Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.