Find the average of all time even no between 10 to 30. – InterviewSolution

1.	Find the average of all time even no between 10 to 30.
Answer» Even numbers between 10 to 30 are 12,14,16,..,28 28 = 12 + (n-1)2 16 = (n-1)2 n-1 = 8 n = 9 S9 = 9/2(12+28) = 9/240 = 920 = 180

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