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

which number am I?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Can you count the number of quadrilaterals in the picture below?

How many Watermelons are there in the below picture?

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

Do you know what I am?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Which city is three-fifths chick two third cat and 50% goat?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?