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Basic Mathematics QUESTION #7979
Question 1
What is the average of \(\dfrac{1}{2},\ \dfrac{5}{6},\ \dfrac{3}{4},\ \dfrac{5}{12}\)?
  • \(\dfrac{7}{8}\)
  • \(\dfrac{2}{5}\)
  • \(\dfrac{5}{8}\)✔️
  • \(2\dfrac{1}{2}\)
Correct Answer Explanation
Sum \(= \dfrac{1}{2}+\dfrac{5}{6}+\dfrac{3}{4}+\dfrac{5}{12}\). L.C.M. of 2,6,4,12 is 12.
\(= \dfrac{6}{12}+\dfrac{10}{12}+\dfrac{9}{12}+\dfrac{5}{12} = \dfrac{30}{12} = \dfrac{5}{2}\)
Average \(= \dfrac{5/2}{4} = \dfrac{5}{8}\)