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

O T T F F S S ?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Give it food and it will live; give it water and it will die.

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Can you write down eight eights so that they add up to one thousand?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

What time is it when an elephant sits on a fence?