Can you replace the question mark with the correct number?

Can you guess the name of the month by looking the below rebus ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I shave every day, but my beard stays the same. What am I?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

why number 8549176320 is one of a kind?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What can you deduce from the following BrainBat?

CRY
LMKI