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 am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

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

Who can jump higher than a Mountain?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?