 x 3 x 1 x 5   
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The arithmetic mean (average) of 3, 5, 7, and y is 100. What is the value of y?
 The arithmetic mean of n numbers is their sum divided by n. So, (3 + 5 + 7 + y) / 4 = 100 or 15 + y = 100 × 4 = 400. Sorry, but this feature does not work in your country because it is blocked by your country's firewall. |
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