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2. (1) The mean of 15 number is 27.if each number is multiplied by 4,what will be the mean of new number? (2) The mean of 20 number is 18.if 3 is added to each of the first ten numbers, find the mean of the new set of 20 numbers? |
| Answer» 2. (1) The mean of 15 number is 27.if each number is multiplied by 4,what will be the mean of new number? (2) The mean of 20 number is 18.if 3 is added to each of the first ten numbers, find the mean of the new set of 20 numbers? | |