Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Replace the question mark with the correct number.

Decode this picture on T-Shirt and tell what it says ?

Can you solve this picture maths equation?

What has one eye, but can’t see?