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      Question

      Group ‘M’ comprises four even integers in order, and

      group ‘N’ includes four successive odd integers. If the average of their first elements is 33.5, what is the sum of the last elements of both groups?
      A 42 Correct Answer Incorrect Answer
      B 79 Correct Answer Incorrect Answer
      C 85 Correct Answer Incorrect Answer
      D 51 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Group M: {x, (x + 2), (x + 4), (x + 6)} Group N: {y, (y + 2), (y + 4), (y + 6)} Now, (x + y) ÷ 2 = 33.5 Or, x + y = 67 Required sum = x + 6 + y + 6 = 67 + 12 = 79

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