484, 240, 120, 57, 26.5, 11.25, 3.625
Answer: Option [B]
The wrong number from the given series is 120. It is replaced by 118
484 x 0.5 - 2 = 240
240 x 0.5 - 2 = 118
118 x 0.5 - 2 = 57
and so on.....6, 10, 14, 34, 66, 130, 258
Answer: Option [A]
The wrong number from the given series is 14. It is replaced by 18
6 x 2 - 2 = 10
10 x 2 - 2 = 18
18 x 2 - 2 = 34
and so on...18, 20, 23, 32, 48, 73, 109
Answer: Option [B]
The wrong number from the given series is 20. It is replaced by 19
18 + 12
19 + 22
23 + 32
32 + 42
48 + 52
73 + 62
5, 7, 16, 57, 244, 1245, 7506
Answer: Option [C]
The wrong number from the given series is 7. It is replaced by 6
5 x 1 + 12 = 6
6 x 2 + 22 = 16
16 x 3 + 32 = 57
57 x 4 + 42 = 244
244 x 5 + 52 = 1245
1245 x 6 + 62 = 7506
99, 80, 64, 48, 35, 24
Answer: Option [D]
The wrong number from the given series is 64. It is replaced by 63
102 - 1 = 99
92 - 1 = 80
82 - 1 = 63
72 - 1 = 48
62 - 1 = 35
52 - 1 = 24