5. The average of x number is y and average of y number is x then the average of all the numbers taken together is 11. (1 ) X + y 2xy (2) 2xy X + ху x² + y² (3) x + y Xty (5) None of these
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Step-by-step explanation:
The sum of x numbers = xy
the sum of y numbers = xy
by using formula of average,
= (xy+xy)/x+y
= 2xy/xy
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