Complete the following Number series:

1, 3, 11, 47, ……………., 1439
(a) 239
(b) 293
(c) 932
(d) None of these

Anurag Mishra Professor Asked on 2nd March 2016 in Reasoning Questions.
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    Answer: (a) 239

    Explanation:-
     1 x 2 + 1 = 3,
     3 x 3 + 2 = 9 + 2
    = 11,
    11 x 4 + 3 = 44 + 3
     = 47, 

    Same as, 
    47 x 5 + 4 = 235 + 4
     = 239

    Then, the missing number is 239. 

    Hence, the correct answer is option (a) 239. 

    Anurag Mishra Professor Answered on 2nd March 2016.
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