Question
What will come in place of the question mark (?) in the
following series? 1.5, 3.5, 9.5, 27.5, 81.5, 243.5, ?Solution
1.5, 3.5, 9.5, 27.5, 81.5, 243.5, ? 1.5 × 3 – 1 = 3.5 3.5 × 3 – 1 = 9.5 9.5 × 3 – 1 = 27.5 27.5 × 3 – 1 = 81.5 81.5 × 3 – 1 = 243.5 243.5 × 3 – 1 = 729.5
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