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Positive integers a1, a2, ........ form ...

Positive integers `a_1, a_2, ........` form an A.P. If `a_1, = 10` and `a_(a_2), =100`, then(A) common difference of A.P. is equal to 6. (B) The value of `a_3`, is equal to 20.(C) The value of `a_22`, is equal to 136. (D) The value of `a_(a_3)`, is equal to 820.

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