What do you get if you add 2 to 100 four times?

What is the next number in the series?

15 29 56 108 208 ?

What is at the end of a rainbow?

What have one eye but still cannot see?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?