What does this rebus puzzle means ?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What happened when the wheel was invented?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

What seven-letter word has hundreds of letters in it?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

What does this say?

XLR8