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

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Asked by Neha on 27 Apr 2023


Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

Asked by Neha on 28 Jul 2021

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

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What part of Turkey has the most feathers?

Asked by Neha on 30 Dec 2025

what's the probability of getting a king or a queen from a pack of 52 cards?

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What is common among 11, 69, and 88?

What is common here

Asked by Neha on 15 Sep 2023


Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

Asked by Neha on 11 Aug 2025

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Asked by Neha on 03 Aug 2021

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Asked by Neha on 21 Oct 2025


Can you make four (4) nines (9) equal 100?

Asked by Neha on 16 Jul 2023

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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.