In each of the following number series the wrong number is given find out that number 600 592 565 49...........

Quantitative Aptitude ( Phase -I) Number series

In each of the following number series, the wrong number is given, find out that number.

600, 592, 565, 491, 376, 160

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SEBI Grade A (Ph 1 Paper 1 2021)

565

376

160

491

592

- Let's examine the series: 600, 592, 565, 491, 376, 160.

- 600 to 592: This is a decrease of 8.

- 592 to 565: This is a decrease of 27.

- 565 to 491: Here, the difference is 74.

- 491 to 376: This is a difference of 115.

- 376 to 160: This decreases by 216.

- The differences don't show a clear pattern.

- However, a review shows the decrease seems to follow a pattern involving square numbers:

- 8 (2² + 4)

- 27 (3² + 3)

- 64 (8², intended; actual was 74)

- 115 (9² + 34, intended; actual is fine)

- 216 (6³; the cube of 6)

- The mismatch in intended differences is at "491," which should be "501" because 565 - 64 = 501.

- The wrong number in the sequence is 491.

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