Question
15 25 40 65 ?
195 What will come in place of the question mark (?) in each of the following series?Solution
15 × 2 - 5 = 25 25 × 2 - 10 = 40 40 × 2 - 15 = 65 65 × 2 - 20 = 110 110 × 2 - 25 = 195
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