I have feet, but no legs. Which animal Am I?

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

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

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

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Can you fill the blank with the correct number?

6 30 870 756030 _____

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?