1. The diameter of a circle is a whole number. The area of the circle is between 100 and 120 square units. What is the number of units in the circle's diameter?

2. A merchant gives a 20% discount on a coat, followed by a 30% discount, followed by a 10% discount. Each new discount is applied to the price of the coat after the previous discount. What single percent discount is equivalent to these three successive discounts? Express your answer as a decimal to the nearest tenth.

3. Colette had a doll collection. She gave half of her dolls to her niece. She then gave away one-fourth of the remaining dolls to her sister, leaving her with only 24 dolls. How many dolls did she have in her original collection?

5. Two standard six-faced dice are rolled. Jean wins if the product of the two numbers rolled is odd or a multiple of three, otherwise Allen wins. What is the probability that Jean wins? Express your answer as a common fraction.