Multiple choice

Directions: In the following question, a series is given with one number missing. Choose the correct alternative that will complete the series. 75, 73, 69, 67, 63, ?

  1. 61

  2. 62

  3. 65

  4. 68

  5. None of these
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A Correct answer
Explanation

The series is 75, 73 (-2), 69 (-4), 67 (-2), 63 (-4). The pattern is alternating -2, -4. The next step should be -2, so 63 - 2 = 61.

AI explanation

The series follows an alternating subtraction pattern where 2 is subtracted and then 4 is subtracted consecutively. The working is 75 - 2 = 73, 73 - 4 = 69, 69 - 2 = 67 and 67 - 4 = 63. To find the missing number, subtract 2 from 63 to arrive at 61.

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