There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

What does a man do only once in his lifetime, but women do once a year after they are 29?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Spot the cat in the picture below

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

Can you write down eight eights so that they add up to one thousand?

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.

Find the next number in the following series:
6, 14, 26, 98, __?

A man dies of old age on his 25 birthday. How is this possible?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?