If 21x = 79x, what is the value of x?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

What can you deduce from the following BrainBat?

CRY
LMKI

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I have branches, but no fruit, trunk or leaves. What am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

What does the below image rebus riddle means ?