If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

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 ?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What does an Island and the letter T have in common?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Can you divide the below-given shape into four equal and identical pieces?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you write down eight eights so that they add up to one thousand?