In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

I make two people out of one. What am I?

What can jump higher than a building?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

If six children and two dogs were under an umbrella, how come none of them got wet?

I have feet, but no legs. Which animal Am I?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

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

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

what does this picture(rebus) riddle means ?