I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve the equation in the image by looking at the pattern closely.

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What kind of band never plays music?

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

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 ?

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

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?

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?