If a person has 2 friends in 5th class, when he comes in 6th class he has 2 more friends but one?

... friend of 5th class has left him. This process continues till 10th class then what is the average number of friend he has? or:... friend of 5th

... friend of 5th class has left him. This process continues till 10th class then what is the average number of friend he has?

or:... friend of 5th class has left him. This process continues till 10th class then what is the average number of friend he has?

Tags: