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JEE Math Practice Question

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b?

  1. A.a = 0, b = 7
  2. B.a = 5, b = 2
  3. C.a = 1, b = 6
  4. D.a = 3, b = 4

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