Among the following options which value of a and b satisfies the given equation:
$20^{2}$ + $a^{2}$ = $b^{2}$

21, 29

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22, 28

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23, 25

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24, 30

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Solution

The correct option is A
21, 29

Among the given options,

$20^{2}$ + $21^{2}$ = $29^{2}$

$400$ + $441$ = $841$

So, a and b are 21 and 29 respectively.

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