What does this rebus riddle means ?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

What breaks yet never falls, and what falls yet never breaks?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Why 1729 is a magic number? Answer Logically.

What can go up a chimney down, but can't go down a chimney up?

What is the Surname of Barbie Doll?