Question 224

5, ?, 15, 75, 525, 4725, 51975

Solution

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Let us analyze the ratio of consecutive terms of the series.

75 / 15 = 5

525 / 75 = 7

4725 / 525 = 9

51975 / 4725 = 11

Hence, the ratio is increasing by two with every consecutive term.

So, the required term will be 15 / 3 = 5

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