Prove that twice of ten is the same as twice of eleven.

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Make a sentence consisting of three words that have the whole alphabet.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

A bomb exploded in a room full of married couples and no one died. How?

What has many teeth, but cannot bite?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

What is the coolest letter in the alphabet?

What part of Turkey has the most feathers?