If a series is multiplied by 5, then the value of arithmetic mean of that series will:
(a) added by 5 (b) subtracted by 5
(c) multiplied by 5 (d) divided by 5
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Explanation:
assume that series is 1,2,3,4,5
AM of series is 15/5 = 3
if series is multiplied by 5 then 75
Am is also multiplied by 5 then 15
New Am = 75/15 = 5
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