the arithmetic mean of 1, 2, 3, ......,n is - (a)(n+1)/2 (b) (n-1)/2 (c)n/2 (d)n/2 +1

Asked by  | 19th Nov, 2013, 10:20: PM

Expert Answer:

Answered by Vimala Ramamurthy | 20th Nov, 2013, 09:08: AM

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