Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

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?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

John was piloting a plane behind a car but was never able to overtake it. Why?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

If six children and two dogs were under an umbrella, how come none of them got wet?

If eleven plus two equals one, what does nine plus five equal?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?