Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Which English verb becomes past tense just by rearranging the letters?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Whats the next number in the below number sequence pattern.

What has no start, end, or centre?

Why is the Hole below a Lock?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Which fur should we be getting from the Lion?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?