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  • SSC Quantitative Ability mock Test
  • Which of the following numbers will completely divide (81...
Multiple choice

Which of the following numbers will completely divide (817 - 1)

  1. 8

  2. 10

  3. 14

  4. 16

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

(Xn-1) will be divisible by (x + 1) only, when n is even.(817 - 1) =(92)7-1,which is divisible by (9 + 1), i. e. 10.

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