Current location - Training Enrollment Network - Mathematics courses - Four people practice the mathematical problems of basketball passing and catching.
Four people practice the mathematical problems of basketball passing and catching.
That can be solved by formula.

Because it passed four times, there are four more people.

So [(4-1) 5+(4-1) * (-1) 5]/4 = 60.

The specific formula is as follows

[(r- 1)^(n+ 1)+(r- 1)*(- 1)^(n+ 1)]/r

How many people does r stand for

N represents how many times you have worn it.