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the-average-of-10-numbers-is-5-the-sum-of-their-squares-is-5000-how-large-can-the-largest-number-among-them-at-most-be-and-how-small-can-the-smallest-number-among-them-at-most-be-




Question Number 180889 by mr W last updated on 18/Nov/22
the average of 10 numbers is 5. the  sum of their squares is 5000. how   large can the largest number among  them at most be and how small can   the smallest number among them  at most be?
$${the}\:{average}\:{of}\:\mathrm{10}\:{numbers}\:{is}\:\mathrm{5}.\:{the} \\ $$$${sum}\:{of}\:{their}\:{squares}\:{is}\:\mathrm{5000}.\:{how}\: \\ $$$${large}\:{can}\:{the}\:{largest}\:{number}\:{among} \\ $$$${them}\:{at}\:{most}\:{be}\:{and}\:{how}\:{small}\:{can}\: \\ $$$${the}\:{smallest}\:{number}\:{among}\:{them} \\ $$$${at}\:{most}\:{be}? \\ $$
Commented by mr W last updated on 20/Nov/22
the largest number can at most be  5+5(√(11))  the smallest number can at most be  5−5(√(11))
$${the}\:{largest}\:{number}\:{can}\:{at}\:{most}\:{be} \\ $$$$\mathrm{5}+\mathrm{5}\sqrt{\mathrm{11}} \\ $$$${the}\:{smallest}\:{number}\:{can}\:{at}\:{most}\:{be} \\ $$$$\mathrm{5}−\mathrm{5}\sqrt{\mathrm{11}} \\ $$

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