In: Statistics and Probability
1.a) If the probability that event E will occur is 1/13, what is the probability that E will not occur?
b) If the first digit of a seven-digit phone number cannot be a 0 or a 1, what is the probability that a number chosen at random will have all seven digits the same?
c) How many ways can a 10-question multiple-choice test be answered if each question has 5 possible answers?