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

What Word am I Looking For ?

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?

If 21x = 79x, what is the value of x?

Which is faster, Heat or Cold ? Explain.

Which part of London exists in France as well ?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

Make a sentence consisting of three words that have the whole alphabet.

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?