John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Find the next number in the sequence

5 12 24 36 ?

10+10 and 11+11 can give you the same answer.

Explain how?

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?

How many letters are in the alphabet?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

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

Find
6 * 5 * 4 = ?