How can one talk without saying a single word?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

I add 5 to 9 and get 2. The answer is correct, so what am I?

Shyla was sleeping in her apartment when suddenly a robber broke into her house. He asked her to stay quiet and started looting the cash and jewelry. Suddenly the landline phone started ringing. The robber pointed a gun at Shyla and asked her to pick up and talk without giving away the situation.

She picked up the phone and it happened to be her husband. She spoke, Is it an emergency darling? Do give me a call when your flight lands, I will prepare your favorite food that will help you relieve the stress. Then she hanged up.

10 minutes after, the police arrive at the scene and catch the robber. How did the police know about the robbery?

I don't get anymore wetter, no matter how much rain falls on me.

When we see 2 but call 10?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

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

Can you spot the man between the coffee bean in the picture below ?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?