Question

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Answer 1

Meanof the six numbers is  2706=45

Explanation:

There are 3 different sets of numbers involved here.

A set of six, a set of two and the set of all eight.

Each set has its own mean.

mean=Totalnumber of numbers  OR M=TN

Note that if you know the mean and how many numbers there are, you can find the total.

T=M×N

You can add numbers, you can add totals, but you may not add means together.

So, for all eight numbers: The total is 8×41=328

For two of the numbers: The total is 2×29=58

Therefore the total of the other six numbers is 328−58=270

The mean of the six numbers =2706=45