Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A father's child, a mother's child, yet no one's son.

Who am I?

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

O T T F F S S ?

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?

Replace the question mark with the number below given a simple math problem.

Find the missing number in the sequence below:

If your uncle’s sister is not your aunt, what relation is she to you?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

You can hear me, but you can't touch or see me.

What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?