How can one talk without saying a single word?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What word is represented by this rebus?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?