What is always in front of you but can’t be seen?

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

3 6 12

4 8 16

5 10 ?

When 99 is considered higher than 100?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Which is heavier: a ton of bricks or a ton of feathers?

1. Where does Easter come from before Valentine's Day?

2. Do you know what is in the middle of Valentine's?

3. What did the lady bee say to the man bee on the occasion of Valentine's Day

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??