Find the square of 11111.

123454321

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12345654321

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12312

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121

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Solution

The correct option is A 123454321
The square of numbers containing only '1' follow a specific pattern.

Since it contains 5 1's, the number will first increase from 1 to 5 and then decrease to 1.

∴ $(11111)^{2}$ = 123454321.

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Similar questions

∣ ∣ ∣ ∣ \begin{matrix} 1 & 1 & 1 1 & 1 + sin θ & 1 1 & 1 & 1 + cos π \end{matrix} ∣ ∣ ∣ ∣

|\begin{matrix} 1 & 1 & 1 \\ 1 & 1 + \sin θ & 1 \\ 1 & 1 & 1 + \cos θ \end{matrix}|

(11111 + 5^{11111})

1, 11, 111, 1111, 11111, . . .

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