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o numbers is 4 and theof the four number is,11. There are four unknown numbers. The mean of the first two numbersof the first three is 9. The mean of all four number is 15, if one of the fourthe other numbers. |
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Answer» 4th no is not understandable average of first 3 =15 sum of 1st 3 no. = 3×15=45& also last 3 no. =16sum of last 3 =16×3=48in it last no is 19 so middle two =48-19=29so 29 minus from first 3so 1st no =45 -291st no. =16 so let 2nd no be x and 3rd be 29 -x so according to the 1st conditions 16 +x+29 -x =45 x + 29 - x = 29 let x be 15 so 3rd no be 14 16,15,14 is the right answer we yg xhohuf8v ng tu de ov 4th number is not understandable |
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