Multiple choice

Find the wrong term in the given series. $440, 439, 437, 433, 425, 411, 377$

  1. $377$
  2. $411$
  3. $437$
  4. $433$
  5. $425$
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B Correct answer
Explanation

Analyze the subtraction pattern: 440-1=439, 439-2=437, 437-4=433, 433-8=425, 425-16=409. The differences are 1, 2, 4, 8, 16 (doubling each time). But we have 411 instead of 409. Let's check: 425-16=409, not 411. So 411 is incorrect. Continuing: 409-32=377. This matches the last term. Therefore 411 is the wrong term.

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