A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

No matter how little or how much you use me, you change me every month. What am I?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

What is wrong in the below Picture?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Why are televisions attracted to people?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?