Find the next number in the sequence

5 12 24 36 ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

I have Rs.50 and I spend it in the way as below.

There is something which is always coming but never arrives?

What is the next shape from answers A, B, C, and D figure?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?