Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

What is the next number in the series?

15 29 56 108 208 ?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

How can you tell a raw egg from a hard-boiled egg?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?