What always comes into a house through the keyhole?

Can you find a five letter word that is left with only two letters if one is removed?

Find the missing number in the sequence below:

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

Why do Chinese men eat more rice than Japanese men do ?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

I look at you, you look at me I raise my right, you raise your left. What am I?

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?

What is at the end of a rainbow?