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?

How far can you walk into the woods?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Solve this riddle by finding the odd one out from the rest.

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?