1, 5, 14, 30, 55, 91, ?

Choose the correct alternative from the given ones that will complete the series at (?)-
1, 5, 14, 30, 55, 91, ?
(a) 121
(b) 136
(c) 142
(d) 140

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  • 2 Answer(s)

    Answer: (d) 140

    Anurag Mishra Professor Answered on 9th June 2016.
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    4,(4+5)=9,(9+7)=16,(16+9)=25,(25+11)36,(36+13)49

    vinesh Newbie Answered on 22nd June 2016.
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