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Question

If an+2 = a2n1, the value of n is :


  1. 1

  2. 2

  3. 3

  4. 0


Solution

The correct option is C

3


Given that an+2 = a2n1
Since bases are equal, exponents must also be equal.
n+2=2n1
2+1=2nn
n=3

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