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Answer : 1 145 Explanation : Answer: A) 145 Explanation: 4       30       ?     1440       7195      71940 Here the given series follows a pattern of 4 4 x 10 - 10 = 30 30 x 5 - 5  = 145 145 x 10 - 10 = 1440 1440 x 5 - 5 = 7195 7195 x 10 - 10 = 71940 Hence, the missing number is 145

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