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 am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

What's a single-digit number with no value?

Find the next number in the series below.

6 18 270 72090 ?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How many Watermelons are there in the below picture?

What kind of storm is always in a rush?