Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

What has 88 keys?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

You can see three almost identical images below. Can you spot the odd one out from them?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

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

Can you count the number of squares in the figure below?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?