# Probability and statistic question needs an answer [closed]

Each day the price of a new computer stock moves up one point or down one point with probabilities 0.75 and 0.25. What is the probability that by the end of the sixth day the stock will have returned to its original price (the price today, day 0)?

$P(3;6,0.75) = \binom{6}{3}0.75^30.25^3 \approx 0.132$