Question
52 25 27 ? 208
1648 What should come in place of the question mark (?) in the following number series.Solution
52 × 0.5 – 1 = 25 25 × 1 + 2 = 27 27 × 2 – 4 = 50 50 × 4 + 8 = 208 208 × 8 – 16 = 1648
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18Â Â Â 19Â Â Â 34Â Â Â 111Â Â Â Â 428Â Â Â Â 2165Â Â Â Â ?
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