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

Find
6 * 5 * 4 = ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

What have one eye but still cannot see?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Before Mount Everest was discovered, what was the highest mountain in the world?

I cannot talk, but I always reply when spoken to. What am I?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS