Time Measurement

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?




Similar Riddles

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Asked by Neha on 27 Nov 2025


Which is heavier: a ton of bricks or a ton of feathers?

Asked by Neha on 28 Feb 2022

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

Asked by Neha on 14 Apr 2023


How many letters are in the alphabet?

Asked by Neha on 04 Nov 2025

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

Asked by Neha on 01 Jul 2024

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Asked by Neha on 27 Oct 2024


There are forty elephants and they have forty-fore heads. How can this be possible?

Asked by Neha on 16 Apr 2024

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Asked by Neha on 13 Mar 2025

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


Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Asked by Neha on 05 Feb 2023

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Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.