Rectify the following equality 101 - 102 = 1 by moving just one digit.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

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?

Can you count the number of triangles in the given picture?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

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

You need to remove two matchsticks to make the below equation true. Can you do it ?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?