if the mean of 6,8,5,7,x and 4 is 7 then x=what?
(a)12 (b)0 (c)7 (d)5
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Answer: 12
Step-by-step explanation:
Mean = 7
Sum/Number=7
(6+8+5+7+x+4)/6=7
(30+x) = 42
x=12
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