What is full of holes but still holds water?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

What kind of band never plays music?

What number do you get when you multiply all of the numbers on a telephone's number pad?

If,

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

Then

4 / 5 = ?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Find the number of squares in the below picture