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Question

If the square of a number ends with 17 zeros, then its square will end with how many zeros?


A

34

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B

17

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C

51

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D

indeterminate

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Solution

The correct option is A

34


We know that if a number has 'n' zeros at the end, its sqaure will have '2n' zeros

Let the given square of a number be 'x'
Number of zeros x has = 17
Number of zeros x2 has=2×17=34

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