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

Bobby and Wilbur decided to take their respective car out of the garage and race. None of them cheated and they both stood at the start time and decided to cover a distance in full throttle. The first to reach the mark was to be declared the winner.

Upon reaching the finishing mark, they found out that Bobby's car was 1.2 times faster than Wilbur's. Now, Wilbur had reached the mark about 1 minute and 30 seconds later than Bobby. Bobby's car reached the mark of 60 MPH on average.

Can you calculate the distance between the starting mark and the final mark with the help of the given data?

Asked by Neha on 08 Mar 2026


In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

Asked by Neha on 23 Mar 2026

Find the next number in the series.
1 10 24 43 67 ?

Asked by Neha on 26 Jun 2024


I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Asked by Neha on 14 Mar 2025

Two friends Smith and Andrew were talking about the bravery of their families. Smith told great stories about his courageous grandfather who fought for Britain in "World War I". Andrew told that his grandfather was so brave that in 1919 just after the war he was honoured with a bravery medal with the words "For our Courageous Soldiers In World War I" embedded into it. Smith knows that his friend is lying. How?

Asked by Neha on 09 Mar 2026

What does below Rebus mean ?

esgg sgeg gegs gsge

Asked by Neha on 10 May 2021


A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Asked by Neha on 05 Apr 2024

Count the number of lines in the image below ?

Riddles From Picture

Asked by Neha on 03 Feb 2021

Can you replace the question mark with the correct number in the below table sequence?

Complete the table Sequence

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The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Asked by Neha on 30 Jan 2021

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Amazing Facts

Challenging

There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.