Which number should replace the question mark?

What month of the year has 28 days?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

100 birds were sitting on a tree.
A shooter shoots one of the birds and the bird dies instantly.

How many are left now?

Can you find the 09 errors in the picture below?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?