if average of three number is 13 then what is the sum of three number ?
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Let the three number be x,y and z
So the average is x+y+z/3 =13
x+y+z = 13×3
x+y+z = 39
So the value of three number together is 39
So the average is x+y+z/3 =13
x+y+z = 13×3
x+y+z = 39
So the value of three number together is 39
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