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Solution
Each term in the series is 4 times the previous term plus 2.
For example, 10 = 4*2 +2
42 = 4*10 + 2
170 = 4*42 + 2 and so on.
So, the term to be replaced in place of the question mark equals 4*170 + 2 = 682
Each term in the series is 4 times the previous term plus 2.
For example, 10 = 4*2 +2
42 = 4*10 + 2
170 = 4*42 + 2 and so on.
So, the term to be replaced in place of the question mark equals 4*170 + 2 = 682