Question

5. If mean of 9, 5, 7, x, 6 is 6, find the value of x. 6. What is the range of the these integers? 20, 6, 18, -15, -12, 0​

Answer 1

Answer:

If y is a multiple of 5, 4y must be a multiple of 5 too.

3x = 200 - 4y = Multiple of 5 - Multiple of 5 = Multiple of 5

Since 3 is not a multiple of 5, x MUST be a multiple of 5.

Also, 4y is even. So 3x = Even - Even = Even

Since 3 is not even, x must be even.

Hence x must be a multiple of 10.

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Answer 2

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