As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

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?

Can you solve the maths in the below-given picture equation?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

Which is heavier: a ton of bricks or a ton of feathers?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?