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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you guess the name of the month by looking the below rebus ?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Can you identify the famous TV character from the rebus below?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

What came first, the chicken or the egg?

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

Explain how?