RRB NTPC Mains or Stage 2 Model Paper 10 with solutions

Question : 47 of 120

Marks: +1, -0

1, 2, 8, 33, 148, ?

Solution:

(d)

1 × 1 + (1)^2 =1 + 1 = 2;

2 × 2 + (2)^2 = 4 + 4 = 8;

8 × 3 + (3)^2 = 24 + 9 = 33;

33 × 4 + (4)^2 = 132 + 16 = 148;

148 × 5 + (5)^2 = 740 + 25 = 765

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