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

Which five letter word can be added at the end of below word to form a
valid word?

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Asked by Neha on 13 Aug 2021


I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Asked by Neha on 20 Apr 2023

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Asked by Neha on 10 May 2021


Find the next number in the sequence

5 12 24 36 ?

Asked by Neha on 08 Jul 2023

The centre of the third figure is empty. What digit should fit inside?

Missing Digit Riddle

Asked by Neha on 24 Jan 2024

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

Asked by Neha on 17 May 2021


It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

Asked by Neha on 17 May 2021

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

Asked by Neha on 15 Sep 2024

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Asked by Neha on 26 Feb 2023


It belongs to you, but other people use it more than you do. What is it?

Asked by Neha on 19 Feb 2022

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Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.