1. “My five children were all born two years apart,” Liz declared. Steve nodded. “But how old are they now?” Liz thought a moment. “Put it this way,” she replied. “If you divide the square of the age of the oldest by a certain whole number you get the total of their ages.” Well?

Ages 12, 14, 16, 18 and 20 years

Ages 13, 15, 17, 19 and 21 years

Ages 10, 12, 14, 16 and 18 years