15
Find out the wrong number in the series.
17, 23, 35, 55, 85, 125
17, 23, 35, 55, 85, 125
- A17
- B23
- C55
- D85
Answer not set
Discussion 1
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CCommunity
⇒ 17 + 2 × 3 = 23
⇒ 23 + 3 × 4 = 35
⇒ 35 + 4 × 5 = 55
⇒ 55 + 5 × 6 = 85
⇒ 85 + 6 × 7 = 127
∴ Wrong number in series = 125
⇒ 23 + 3 × 4 = 35
⇒ 35 + 4 × 5 = 55
⇒ 55 + 5 × 6 = 85
⇒ 85 + 6 × 7 = 127
∴ Wrong number in series = 125