What is the square root of 123454321?

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A 1111
B 111111
C 11111
D 111

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Answer: C. 11111

Squares of 1s make a palindrome that climbs to the number of 1s: 11111 has five 1s, so 11111^2 = 123454321. Hence the square root of 123454321 is 11111.

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What is the square root of 123454321?

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