. The mean of 20 numbers is 18. If 3 is added to each of the first ten numbers, find the mean of the new set of 20 numbers. 23 Tf one of the numbers is excluded, the
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The mean of 20 nu
Sum of these numbers = 20 × 18 = 360. When 3 is added to each of the first ten numbers, Total increment in sum = 10 × 3 = 30.
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Ghn
Step-by-step explanation:
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