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

Do you know what I am?

What has many keys but can’t open a single lock?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

My location can be determined by the below rebus.
So where am i ?

Can you count the number of triangles in the given picture?

In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

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 shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?