X is a 30 digit number starting with the digit 4 followed by the digit 7. Then…

2017

X is a 30 digit number starting with the digit 4 followed by the digit 7. Then the number X3 will have

Answer: A. 90 digits

  1. A.

    90 digits

  2. B.

    91 digits

  3. C.

    92 digits

  4. D.

    93 digits

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Correct answer: A

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