The average of a set of 12 numbers, which includes 34, is N. If 34 is removed from the set and 38 is added to the set, what is the average of the new set of numbers?

A N+1/3

B N+19/6

C N+4

D N+6

Correct Answer: Option A

প্রথম 12 টি number এর যোগফল =12N

34 is removed from the set and 38 is added to the set = 12N-34-38

=12N+4

Average = 12N+4/12 = N+1/3