In the following number series a wrong number is given Find out the wrong number 10 26 74 218 654 19...........

Quantitative Aptitude(IBPS RRB PO) Number series

In the following number series, a wrong number is given. Find out the wrong number.

10, 26, 74, 218, 654, 1946, 5834

This questions was previously asked in

RRB PO Prelims (21 August 2022 Shift1)

218

654

1946

- Let's analyze the pattern of the series given: 10, 26, 74, 218, 654, 1946, 5834.

- Each number seems to be multiplying by 3 and then subtracting 2.

- 10 * 3 = 30 - 2 = 28 (not matching, hence wrong initial guess)

- An accurate pattern needs to be identified:

- 10 * 2.6 = 26

- 26 * 2.8 = 72.8 (Approximately 74, close enough)

- 74 * 3 = 222 (Approximately 218, not exact as expected)

- Recalculated with consistent pattern checking could help detect anomalous number:

- 10 * 2 + 6 = 26

- 26 * 3 - 4 = 74

- 74 * 3 - 4 = 218

- 218 * 3 - 4 = 650 (not matching with existing)

- Therefore, the error appears at: Option 4, 654

- ALL other sequences do not follow consistent differential multiplication:

- Rest is found consistent except noted point, option 4.

- Your analysis led you to this conclusion:

Your highlighted analysis is Option: 4, 654

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