CBSE Class 10 Answered
find the arithmetic mean of first ten numbers.
Asked by devendu | 25 Jan, 2014, 08:24: AM
Expert Answer
Sum of first ten numbers = S = n(n+1)/2
where n = 10
Thus, S = 10(10+1)/2 = (10 x 11)/2 = 110/2 = 55
Now, arithmetic mean of first ten numbers = S/n = 55/10 = 5.5
Answered by | 29 Jan, 2014, 04:38: PM
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