Question
For positive integers x and y, x+y=21. What is the smallest possible value of xy?
a.10
b.20
c.38
d.54
e.110
a.10
b.20
c.38
d.54
e.110
Answers
Steve
The largest value is when x and y are almost equal: 10*11
The smallest value is when they are as different as possible: 1*20
The smallest value is when they are as different as possible: 1*20
H
20