find the mean of x , x+2 , x+4 , x+6 ,x+8
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mean=sumof given term/no of term
sum =x+x+2+x+4+x+6+x+8=5x+20
no of term=5
so 5(x+4)/5=x+4
sum =x+x+2+x+4+x+6+x+8=5x+20
no of term=5
so 5(x+4)/5=x+4
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