Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Solve the rebus riddle in the picture below.

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

I cannot talk, but I always reply when spoken to. What am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?