Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

Can you find out the number that should replace the question mark with a valid reason?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

81 x 9 = 801. What must you do to make the this equation true?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What jumps when it walks and sits when it stands?

What is the word or phrase?