A chess rook is on the leftmost cell of the 1×30 lane and can move any number of cells, but only to the right. In how many ways can the rook move to the rightmost cell?

Guest Oct 13, 2019

#2

#3**0 **

A 1 * 30 lane? I am confused, a chess board is 8 * 8

is there a picture that comes with the problem?

CalculatorUser
Oct 13, 2019