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

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Asked by Neha on 14 May 2021


Can you find the company name in the pictogram below?

Find The Company

Asked by Neha on 09 Dec 2024

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

Asked by Neha on 06 Jun 2024


Which fur should we be getting from the Lion?

Asked by Neha on 10 Feb 2021

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Replace the (?)

Asked by Neha on 30 Jun 2023

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

How can this be possible?

Asked by Neha on 26 Feb 2024


Rearrange the letters in "new door" to make one word.

Asked by Neha on 12 Dec 2023

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

Asked by Neha on 17 May 2021

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Asked by Neha on 12 Apr 2025


Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Asked by Neha on 11 Feb 2021

Hot Articles

Amazing Facts

Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.