$Find the value of 1111^{2} .$

1234321

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1334321

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1234331

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134431

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Solution

The correct option is A 1234321
$We know that, 11^{2} = 121 111^{2} = 12321$

Here, the square of numbers containing only '1' follow a specific pattern.

Since it contains 4 1's, the number will first increase from 1 to 4 and then decrease to 1.

$∴ (1111)^{2} = 1234321.$

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