Can you find the key in the picture below?

What is at the end of a rainbow?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

What occurs twice in a week, once in a year but never in a day?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Can you find out the remainder when 3^300 is divided by 5?

Solve the counting riddle by identifying the number of triangles in the given picture.

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?