Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

What is the next number in the series?

15 29 56 108 208 ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Count the number of triangles in the below picture?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Find the smallest sentence with all the English alphabet.

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10