Prove that twice of ten is the same as twice of eleven.

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

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What do you get if you add 2 to 100 four times?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Find the hidden tiger in the given optical illusion ?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

What word is represented by this rebus?