What four weights can be used to balance from 1 to 30 pounds?

Which alphabet letter is a question?

What do you see in the image below

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Mother's Name is Mrs. SIXTY TWO
Son's Name is FIFTY TWO
Daughter's Name is FORTY TWO
What is Name of Father?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

The Federal bank of London is abducted by the robbers. The head of the robbers asked the cashier to empty their money vault to them and when suddenly cashier got a call from her father. To avoid any suspicion, the robber asked the cashier to pick the call and reply her father in the shortest manner possible.

The cashier told her father "Is there an emergency father, Call me when you are free and I will help you in your furnishing" and then the cashier hung up the phone.

After 10 minutes, police arrived at the crime scene.

How did the police know about the robbery?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

The more of this there is, the less you see. What is it?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???