What is full of holes but still holds water?

Using exactly three matchsticks, can you divide the area into two equal parts?

Who always enjoys poor health?

How many Watermelons are there in the below picture?

What have one eye but still cannot see?

Count the squares in the matchstick puzzle below?

John, a 5-year-old boy, was really fond of the chocolates. He asked his Mother to give him some money to buy his favourite chocolates. His Mother gave him $45. He went to the shopkeeper and asked, "How much is one chocolate for?". The shopkeeper said $3 for one chocolate. Also, if you give me the wrappers of three chocolates, I will give you one for the exchange.
In total, how much chocolate could John eat?

The centre of the third figure is empty. What digit should fit inside?

Can you write down eight eights so that they add up to one thousand?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.