In the following question, select the missing number from the given series :
2, 7, 22, 67, ?
Answer : Option D
Explanation : 2 × 3 + 1 = 7 7 × 3 + 1 = 22 22 × 3 + 1 = 67 
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In the following question, select the missing number from the given series :
2, 7, 22, 67, ?