Question

the mean of 7 serial numbers is???​

Answer 1

Answer:

837

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Answer 2

Answer:

Step-by-step explanation:

7 consecutive number is X,X+1,X+2,X+3,X+4,X+5,X+6

Average is 20

(X+X+1+X+2+X+3+X+4+X+5+X+6)/7 =20

(7X+21)/7=20

X+3=20

X=20–3

X=17

The largest of these numbers is X+6

17+6 =23