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

What has many teeth, but cannot bite?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

Can you count the number of lines in the below picture?

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?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

There is a place where if I stand up straight, I will still be considered sideways.

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Before Mount Everest was discovered, what was the highest mountain in the world?

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