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

What Word am I Looking For ?

Bay of Bengal is in which state?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Why do you find that most of the buildings are deprived of the 13th floor?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Why do we preferably have round manhole covers and not square ones?