প্রশ্ন ও উত্তর
The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?
গণিত Statistics and Average 07 Oct, 2020
প্রশ্ন The average of 20, 70 and x is 40. If the average of 20, 70, x and y is 50, then y =?
সঠিক উত্তর
80
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