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What is the arithmetic mean of first 16 natural numbers with weights being the number itself?

Options

  1. A17 12
  2. B33 2
  3. C11
  4. D187 2

Correct answer

A. 17 12

Step-by-step solution

aligned & S ₁₆= 16 2 [2(1)+15(1)] & =8(17) & =136 & A.M. = 136 16 = 17 2 . aligned

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