If the arithmetic mean of 0 5 4 3 is a…

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If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is

  1. A. a = b = c
  2. B. a : b : c = 3 : 2 : 4
  3. C. 4a = 5b = c
  4. D. a + b + c = 12

Answer: Option B

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Solution(By ExamCraze Team)

We have :
$$eqalign{ & a = frac{{0 + 5 + 4 + 3}}{4} = 3 cr & b = frac{{ - 1 + 0 + 1 + 5 + 4 + 3}}{6} = 2 cr & c = frac{{5 + 4 + 3}}{3} = 4 cr & therefore a:b:c = 3:2:4 cr} $$

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