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

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

Take away the whole and some still remain. What is it?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

How many bananas can you eat if your stomach is empty?