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

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Asked by Neha on 24 Aug 2023


I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Asked by Neha on 08 Sep 2025

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

Asked by Neha on 05 May 2023


They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Asked by Neha on 30 Aug 2021

How is the moon similar to a dollar?

Asked by Neha on 26 Sep 2023

Sweet & very intelligent katty has 8 puppets(Jane Bird Barbie Angel Colleen Nora Lass Missy).
All puppets are of different size. She arrange all puppets to face towards the guest and tell the guess the following clues :

* Jane has three puppets bigger on its left side
* Bird has two puppets smaller on its left side
* Barbie has one puppet bigger on its right side
* Angel has two puppets smaller on its right side
* Colleen has one puppet bigger on its left side
* Nora has one puppet smaller on its left side
* Lass has four puppets bigger on its right side
* Missy has three puppets smaller on its right side

Also some puppets are inside the bigger puppets.

Assuming you are the guest , can you tell the katty how the puppets are arranged ?

Asked by Neha on 25 Apr 2023


John was piloting a plane behind a car but was never able to overtake it. Why?

Asked by Neha on 04 Dec 2023

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Asked by Neha on 13 Dec 2020

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Asked by Neha on 09 Jan 2024


Can you find a five letter word that is left with only two letters if one is removed?

Asked by Neha on 20 Jul 2021

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.