The value of $5^{2} - 5$ is equal to:

10

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36

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20

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15

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Solution

The correct option is C $20$
$5^{2} = 5 \times 5$
$5^{2} = 25$

$⟹ 5^{2} - 5 = 25 - 20$
$5^{2} - 5 = 20$

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