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AP EAMCET202018 Sep 2020Evening ShiftMathematicsStatisticsActual

What is the value of (x ) if the mean of (8,6,7 ), (5, x ) and 4 is 7 ?

Options

  1. A10
  2. B12
  3. C8
  4. D6

Correct answer

B. 12

Step-by-step solution

( aligned & Mean =7 & aligned 8+6+7+5+x+4 6 & =7 30+x & =42 x & =12 aligned aligned ) Hence, option (b) is correct.

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