Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

You need to arrange three 7 and mathematical symbols to form number 1?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

What number divided by 4 is the same as that number minus 4?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

Can you find out which number multiplied by itself will give the output as 12345678987654321?