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

why number 8549176320 is one of a kind?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What is the next number in the series?

15 29 56 108 208 ?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Remove two matchsticks to make the below equation correct.

I am white when I am dirty, and black when I am clean. What am I?

Count the Triangle in the figure given below:

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?