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?

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).

What's the only room from which no one can enter or leave

I’m tall when I’m young, and I’m short when I’m old. What am I?

What is next number in the pattern below:

131 517 192 123 ?

What four weights can be used to balance from 1 to 30 pounds?

Name a key which is hardest to turn.

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3