How can you tell a raw egg from a hard-boiled egg?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

How many Watermelons are there in the below picture?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.