Can you replace the question mark with the correct number?

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

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

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

What Word am I Looking For ?

Which digit occurred maximum times between the number 1 and 1000?

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?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Which Travels Faster? Solve below famous picture riddle:

In a classic wine shop, the list of three most popular wines are:
- The cost of 1 French wine bottle: 500$
- The cost of 1 German wine bottle: 100$
- The cost of 20 Dutch wine bottles: 100$

John entered the wine shop and he needs to buy
- All three types of wine bottles.
- Needs to buy Dutch wine bottles in multiples of 20.
- Need to buy 100 wine bottles in total.

John has only 10000$. How many wine bottles of each type, John must buy?