Math, asked by yagvender14, 10 months ago

The mean of 13 observations is 14 . If the mean of the first 7 observations is 12 and that of last 7 observations is 16 , find the 7th observations .

Answers

Answered by sunil763

3

Answer:

Sum of 13 observations :

13×14=182

Sum of first 7 observations :

12×7=84

Sum of second 7 observations :

16×7=112

So the seventh observation :

(84+112) - 182

196 - 182

14

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