4, 5, 15, 49, 201, 1011, 6073 · ABC26GN5536
Subject: General Aptitude · Chapter: Odd Man Out and Series
4, 5, 15, 49, 201, 1011, 6073
(a)5
(b)15
(c)49
(d)201
(e)1011
Answer
Explanation
2nd term = (1st term × 1 + 2) = (4 × 1 + 2) = 6; 3rd term = (2nd term × 2 + 3) = (6 × 2 + 3) = 15; 4th term = (3rd term × 3 + 4) = (15 × 3 + 4) = 49; 5th term = (4th term × 4 + 5) = (49 × 4 + 5) = 210 and so on. 5 is wrong.
Explanation as extracted from the printed page; notation may be imperfect.
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