Measure by Hourglass

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?




Similar Riddles

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Asked by Neha on 07 May 2025


You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

Asked by Neha on 28 Apr 2023

What can go up a chimney down, but can’t go down a chimney up?

Asked by Neha on 12 Jul 2025


I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Asked by Neha on 25 Jul 2025

What has 13 hearts but no other organs?

Asked by Neha on 11 Mar 2022

How many triangles can you count in the figure given?

How Many Triangles Puzzle

Asked by Neha on 06 Dec 2025


What does below Rebus mean ?

esgg sgeg gegs gsge

Asked by Neha on 10 May 2021

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Asked by Neha on 19 Nov 2023

I am the fastest animal but cannot climb the tree. What am I?

Asked by Neha on 29 Oct 2025


The more you take me, the more you leave me behind.
Who Am I?

Asked by Neha on 15 Jan 2025

Hot Articles

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.