Can you find the odd number in the following?

2716, 4135, 5321 and 7145

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

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

10+10 and 11+11 can give you the same answer.

Explain how?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

Can you make four (4) nines (9) equal 100?