Replace the question mark with the correct number in below Picture:

When it is alive we sing, when it is dead we clap our hands. What is it?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you find a rabbit in the given picture?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

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?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?