If two's company, and three's a crowd, then whats four and five ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What has one letter and starts with an E?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

What is the Surname of Barbie Doll?

What English word has three consecutive double letters?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Replace the question mark with the correct number.