What does this rebus riddle means ?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

How many Watermelons are there in the below picture?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

There is an ancient kingdom where every married woman keeps information regarding the fidelity of other men. However, what they don't know is the fidelity of their own husbands. Also, there is an ancient belief that they don't tell each other about the fidelity of their husbands.

On a certain day, the queen of the kingdom declares that she has identified at least one unfaithful man in the kingdom. She allows the wives to identify and gives them authority to kill their husbands if they are unfaithful at midnight.

How will the wives manage it?

When can we add 2 to 11 and get 1 as the correct answer?