A) and B) please, I repost it because the answer form the person who gave me was not same as mine ( on part A) I listed all the combination and it is 28 but what I got is 42) Could someone explain it? thanks

c

Q2) Message that says COMP2121 is to be transmitted through a communication channel When sending COMP2121, transmitter inserts at least two blanks between every two consecutive characters. (Note: Characters are not shuffled and Blanks are not inserted before C and after 1.) a) In how many ways can a transmitter do this if there are 16 blanks? b) Repeat part a) with 30 blanks. Q2) Message that says COMP2121 is to be transmitted through a communication channel When sending COMP2121, transmitter inserts at least two blanks between every two consecutive characters. (Note: Characters are not shuffled and Blanks are not inserted before C and after 1.) a) In how many ways can a transmitter do this if there are 16 blanks? b) Repeat part a) with 30 blanks