Which formula can be used to find the probability of four

Last updated: 7/27/2022

Which formula can be used to find the probability of four forward steps in a random walk, beginning at location 0, given ten total steps and the probability of a forward step is 0.5? a) P(4)=10!/4!(6)! ×0.5⁴ (0.5)⁶ a) P(4) = 10!/(6)! ×0.5⁴ (0.5)⁶ c) P(4)= 10!/4! ×0.5⁴ (0.5)⁶ d) P(4)= 5!/2!(3)! x 0.5²(0.5)³