What does the below rebus riddle means?

Find out the missing number in the picture attached:

Can you solve the below rebus?

A couple went to a hill station to enjoy their vacation. They have 12 sons, and each has a wife who has 3 sons further.

How many people went to the hill station?

The Little ant seems to be always confused. Do you know why?

Move four matchsticks to the below square to form three squares?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

What is the relationship between these matchstick pictures below?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

You see me once in June, twice in November, and not at all in May. What am I?