IBPS RRB PO Prelims 12 sep 2020 - Category wise Question and Answer Practice Test with Solutions & PDF

Answer: (b)

The pattern of the series is:

14 × .5 + 1 = 8

8 × 1 + 1 = 9

9 × 1.5 +  1 = 14.5

14.5 × 2 + 1 = 30

30 × 2.5 + 1 = 76

Hence, the answer is B.

Answer: (c)

The pattern of the series is:

20 + 3² = 29

29 + 5² = 54

54 + 7² = 103

103 + 9² = 184

184 + 11² = 305

Hence, the answer is C.

Answer: (e)

The pattern of the series is: 77 + 8 × 1 = 85

85 – 8 × 2 = 69

69 + 8 × 4 = 101

101 – 8 × 8 = 37

37 + 8 × 16 = 165

Hence, the answer is E.

Answer: (a)

The pattern of the series is:

121 + 2 = 123

123 – (2 + 3) = 118

118 + (2 + 3 + 5) = 128

128 – (2 + 3 + 5 + 7) = 111

111 + (2 + 3 + 5 + 7 + 9) = 137

Hence, the answer is A.

Answer: (d)

The pattern of the series is:

7 × 1 + 1 = 8

8 × 2 + 2 = 18

18 × 3 + 3 = 57

57 × 4 + 4 = 232

232 × 5 + 5 = 1165

Hence, the answer is D.