Brenda realizes that part of her ticket is torn. She can only recall that the number was not a perfect square and had repeating digits. Out of the four vacant seats, which one is hers?

77771112

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7744

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44448889

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11115556

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Solution

The correct option is A 77771112
A perfect square cannot have either of the digits 2, 3, 7, or 8 in its unit's place, since the square of any single digit number can not have these digits in its unit's place.

Therefore, 77771112, having 2 in its unit's place, can not be a perfect square.

Option c will be the correct answer.

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