If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What Deficiency does the below rebus represent?

VIT_MIN

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

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

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

Find the next number in the sequence

5 12 24 36 ?