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In the following number series, a wrong number is given. Find out the wrong number.
3, 13, 33, 137, 681, 4090
3, 13, 33, 137, 681, 4090
- A33
- B681
- C4090
- D137
Answer not set
Discussion 1
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CCommunity
The pattern of given series is:
⇒ 3 × 2 + 7 = 13
⇒ 13 × 3 – 6 = 33
⇒ 33 × 4 + 5 = 137
⇒ 137 × 5 – 4 = 681
⇒ 681 × 6 + 3 = 4089
∴ The wrong number in the series is 4090
⇒ 3 × 2 + 7 = 13
⇒ 13 × 3 – 6 = 33
⇒ 33 × 4 + 5 = 137
⇒ 137 × 5 – 4 = 681
⇒ 681 × 6 + 3 = 4089
∴ The wrong number in the series is 4090