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?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

John was drowned by he was not wet. How?

What kind of band never plays music?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

How many letters are in the alphabet?

Can you place six X (crosses) in below board without making three in a row in any way ?

I shave every day, but my beard stays the same. What am I?

What does does this rebus picture means ?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?