3. Find average of 1 15 even numbers.(a) 16(b) 18(c) 22(d) 244. Find t – InterviewSolution

1.	3. Find average of 1 15 even numbers.(a) 16(b) 18(c) 22(d) 244. Find the average 1 17 odd numbers.(c) 19(d) 21(a) 15)(b) 17
Answer» average of first 15 even numbers2+4+...+30/15now the sum is forming an apa=2d=2n=15henceSn=n/2(2a+(n-1)d)S15=15/2(4+142)S15=15/2(4+28)S15=1516hence average =15*16/15=16

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