A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I can be cracked, made, told, and played. What am I?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

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

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?