Complete the series given below by finding the missing term.
1, 2, 7, 7, 13, 12, ?
A
19
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B
18
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C
12
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D
14
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Solution
The correct option is A 19 Given sequence consists of two series. 1, 7, 13, i.e., difference between consecutive numbers is 6. 2, 7, 12, i.e., difference between consecutive numbers is 5. So, next number in the first series is 19.