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

When it is alive we sing, when it is dead we clap our hands. What is it?

If eleven plus two equals one, what does nine plus five equal?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Why is the Hole below a Lock?

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

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?