Question

    7 ,12 , 11 , 16, 15 ,

    ? What will come in place of question mark (?) in the following series┬а
    A 20 Correct Answer Incorrect Answer
    B 19 Correct Answer Incorrect Answer
    C 22 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer

    Solution

    Alternate numbers +4 7+4=11 , 11+4=15 , 15+4=19 12+4=16, 16+4=20

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