A pair of dice is rolled. Find the probability of rolling (a) a sum not more than 7, (b) a sum not less than 7, (c) a sum between 4 and 9 (exclusive). 21 (Simplify your answer.) 7 The probability of rolling a sum not more than 7 is 12 (Type an integer or a simplified fraction.) (b) How many ways can two dice be rolled such that their sum is not less than 7? 21 (Simplify your answer.) 7 The probability of rolling a sum not less than 7 is 12 (Type an integer or a simplified fraction.) (c) How many ways can two dice be rolled such that their sum is between 4 and 9 (exclusive)?