Which alphabet is a part of our body?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?