What is the fastest way to double your money?

The more of this there is, the less you see. What is it?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

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

What is the last thing you take off before bed?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?