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

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

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Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

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There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

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What does this mathematical rebus means ?

Maths Riddle

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John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

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What word does this rebus represent?

meta meta
meta meta

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I am sure no one can have two things for dinner. what are they?

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Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

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I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

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What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Teaser Puzzle

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.