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

which number am I?

Replace the question mark with the correct number in below Picture:

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

In the image below, can you find the value of an angle(y)

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.