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      Question

      What is the average of the first eight triangular

      numbers?
      A 24 Correct Answer Incorrect Answer
      B 12 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 10 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Triangular numbers are the numbers obtained by continued summation of natural numbers.

      First eight triangular numbers = 1, 3, 6, 10, 15, 21, 28, 36

      Required average = (1 + 3 + 6 + 10 + 15 + 21 + 28 + 36) ÷ 8

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