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

If eleven plus two equals one, what does nine plus five equal?

Asked by Neha on 28 Mar 2022


Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Asked by Neha on 22 Jun 2025

Why did Buffon take the goal with him after every Juventus match?

Asked by Neha on 24 Apr 2025


I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

Asked by Neha on 12 Mar 2023

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

Asked by Neha on 08 Jun 2024

Can you count the number of lines in the below picture?

Count The Number Of Lines

Asked by Neha on 27 Dec 2023


The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Asked by Neha on 26 Apr 2023

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Asked by Neha on 24 Apr 2021

Where do you go to learn how to make ice cream?

Asked by Neha on 07 Aug 2024


You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

Asked by Neha on 23 May 2025

Hot Articles

Amazing Facts

No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki