Maths Logic

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10




Similar Riddles

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

Asked by Neha on 19 Mar 2025


Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

Asked by Neha on 18 Dec 2025

What is both possible and impossible at the same time?

Asked by Neha on 15 Apr 2022


You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Asked by Neha on 17 Jan 2025

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

Asked by Neha on 03 Nov 2025

What has 88 keys?

Asked by Neha on 09 Jul 2025


Which city is three-fifths chick two third cat and 50% goat?

Asked by Neha on 25 Jan 2024

What has one letter and starts with an E?

Asked by Neha on 18 Dec 2024

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

Asked by Neha on 23 Sep 2023


If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Asked by Neha on 05 Jul 2024

Hot Articles

Amazing Facts

Artificial Intelligence

Artificial Intelligence has crushed all human records in the puzzle game “2048,” achieving a high score of 839,732 and beating the game in only 973 moves without using any undo.