Multiple choice general knowledge math & puzzles

2*2 = 4 and 4/2=2 every number multiply by itself and divide by the same initial number we will get the initial number. But not one number which one from the following?

  1. 0.001

  2. 0

  3. 0.16

  4. 0.0016
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B Correct answer
Explanation

This is a duplicate of question 72435. For any non-zero number n, n×n=n² and n²÷n=n. However, 0×0=0, but 0÷0 is undefined. Zero is the exception where the operation fails.

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