Multiple choice

Directions: Find the wrong number in the following number series. 2010, 1909, 1806, 1702, 1594, 1485

  1. 1909

  2. 1806

  3. 1702

  4. 1594

  5. 1485
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C Correct answer
Explanation

The differences are: 2010-1909=101, 1909-1806=103, 1806-1702=104, 1702-1594=108, 1594-1485=109. The pattern of differences should be 101, 103, 105, 107, 109. 1806-105 = 1701. So 1702 is the wrong number.

AI explanation

The differences between the consecutive numbers are 101, 103, 104, 108, and 109. If we consider the pattern of subtracting consecutive numbers starting from 101: 2010 - 101 = 1909, 1909 - 103 = 1806, 1806 - 105 = 1701 (not 1702), 1701 - 107 = 1594, and 1594 - 109 = 1485. The incorrect number is 1702.

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