question11

Given the digits: 3 ; 4 ; 5 ; 6 ; 7 ; 8 and 9 11.1 Calculate how many unique 5-digit codes can be formed using the digits above, if: 11.1.1) The digits may be repeated (2) 11.1.2) The digits may not bc repeated (2) 11.2 How many unique 3-digit codes can be formed … Read more

Harry shoots arrows at a target board. He has a 50% chance of hitting the bull’s eye on each shot. 11.1 Calculate the probability that Harry will hit the bull’s eye in his first shot and his second shot. (2) 11.2 Calculate the probability that Harry will hit the bull’s eye at least twice in … Read more