8 Suppose that a, and b are positive integers, and the four numbers a + b, a − b, a × b, a ÷ b are different and are all positive integers. What is the smallest possible value of a +...
Đọc tiếp
8 Suppose that a, and b are positive integers, and the four numbers
a + b, a − b, a × b, a ÷ b
are different and are all positive integers. What is the smallest possible value of a + b?
