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Previous Year Questions

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Question :

Below given are three series, all the series follow different pattern with wrong term in all three series.

Series 1: 35, 72, 143, 287, 575, 1151

Series 2: 291, 292, 297, 322, 447, 972

Series 3: 133, 170, 135, 162, 117, 154

What is the sum of wrong terms of all three series?

1. 1250

2. 1179

3. 635

4. 1005

5. 1014

Correct Answer : 2
Solution :

Series 1:

35 * 2 + 1 = 71 (not 72)

71 * 2 + 1 = 143

143 * 2 + 1 = 287

287 * 2 + 1 = 575

575 * 2 + 1 = 1151

Series 2:

291 + 50 = 292

292 + 51 = 297

297 + 52 = 322

322 + 53 = 447

447 + 54 = 1072 (not 972)

Series 3:

133 + 37 = 170

170 - 45 = 125 (not 135)

125 + 37 = 162

162 - 45 = 117

117 + 37 = 154

Sum of wrong terms of all three series = 72 + 972 + 135 = 1179

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