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Direction: What will come in the place of question mark (?) in the following number.

  1. 2, 3, 6, 7, 14, 15, ?
    1. 16
    2. 30
    3. 31
    4. 32
    5. None of these
Correct Option: B

See the graph and found that the given number in the series with specific pattern.
From the given graph , we can see that the increasing order of series as -
First term = 2
Second term = First term + 1 = 2 + 1 = 3 ,
Third term = Second term x 2 = 3 x 2 = 6 ,
Fourth term = Third term + 1 = 6 + 1 = 7 ,
Fifth term = Fourth term x 2 = 7 x 2 = 14 ,
Sixth term = Fifth term + 1 = 14 + 1 = 15 ,
Seventh term = Sixth term x 2 = 15 x 2 = 30
Seventh term( ? ) = 30



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