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

Prove that twice of ten is the same as twice of eleven.

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Which question, will you ask?

Can you find the mistake in the below statement?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

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If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

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What does this simple rebus mean?

You need to arrange three 7 and mathematical symbols to form number 1?