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Question

Help John solve this mathematical puzzle:

The difference between two numbers is 1. If so, what will the difference between their squares be?


A
Same as the sum of the numbers
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B
1
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C
Same as the product of the numbers
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D
Cannot be determined
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Solution

The correct option is A Same as the sum of the numbers
Let the numbers be a and b.

ab=1

Now, the difference between the squares of these numbers will be:

a2b2
=(a+b)×(ab)
=(a+b)×1
=(a+b)

Hence, the difference between the squares of the two numbers will be the same as the sum of the numbers.

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