If 2 ^ n P_1, ^ n P_2, ^ n P_3 are three consecutive terms of an AP then they are

JEE Advanced Mathematics question

If are three consecutive terms of an AP then they are

Answer: (A),(B),(C)

AP condition: :

2n(n-1)=2n+n(n-1)(n-2)\ ⇒\ 2(n-1)=2+(n-1)(n-2)\ ⇒\ -5n+6=0\ ⇒\ n=2 or 3.

requires , so . The

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Question ID VK-107876