If 3^ 2 2 -1 , 14 and 3^ 4-2 2 are the first three terms of an A.P., then find its 7^ th term.

JEE Main Mathematics question

If , and are the first three terms of an A.P., then find its term.

Answer: 79

AP gives ; with this is , i.e. . Since

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Question ID VK-022045