Count the squares in the matchstick puzzle below?

What does below Rebus say?

XLR8

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

A man dies of old age on his 25 birthday. How is this possible?

You need to move three matchsticks to form three squares. Can you do it?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?