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Find the missing number in the series 7, 21, 22, 66, 67, ___, 202

Question

Find the missing number in the series 7, 21, 22, 66, 67, ___, 202

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Solution

The pattern in the series is that each number is multiplied by 3 and then 1 is added.

So, starting with 7: 7 * 3 = 21 21 + 1 = 22 22 * 3 = 66 66 + 1 = 67

Following this pattern, the next number should be: 67 * 3 = 201 201 + 1 = 202

So, the missing number in the series is 201.

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