If 1+9+8=1, what is 2+8+9?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Before Mount Everest was discovered, what was the highest mountain in the world?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What has many keys but can’t open a single lock?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?