Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

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?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Why Wine Glass Stem is so long?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Which number should replace the question mark?

Solve the puzzle by telling what does below picture means.

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.