Question

if the mean of 1 2 3 x is 6/11 find the value of x

Answer 1

mean = 6/11
(1+2+3+x)/4 =6/11
6 + x = 24/11
x = 24/11-6
x = -42/11

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Answer 2

6 + x/4 = 6/11
x = 24/11 - 6
x = - 42/11