Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

What is the next number in the series?

15 29 56 108 208 ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

How can you tell a raw egg from a hard-boiled egg?

What is next number in the pattern below:

131 517 192 123 ?

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

Give it food and it will live; give it water and it will die.