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3 points
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I thought with “reversible” they meant that a number falling 50% and then rising 50% afterwards, it is the same number, which is not true.

10 * 50% = 5

5 * 150% = 7.5

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7 points
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50% of 10 is 5

10% of 50 is 5

Not sure if you’re saying you got it.

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2 points

Yeah the correct term would be “commutative” as someone already pointed out. Meaning the order doesn’t matter when considering multiple percentages. E.g 50% of 73% of something is the same as 73% of 50% of that same thing

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