Math, asked by Jagdishbhagat46, 4 months ago

12. If the mean of the observations:
X.X + 3, x + 5.x + 7. x + 10
is 9, the mean of the last three observations is?

Answers

Answered by anitha1525

1

Step-by-step explanation:

here I found x

but I don't know the last three observations

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