If the sum of two numbers is 22 and the sum of their squares is 404, then the product of the numbers is  Choices:
A) 40 B) 44 C) 80 D) 88 E) 90
Sol.   Let the numbers be x and y.   Then, (x+y) = 22 and x2 + y2 = 404.   Now, 2xy = (x+y)2 - (x2 + y2)   = (22)2 - 404 = 484 - 404= 
<gadget id="calculator">484 - 404</gadget>
<output>80</output>
80   xy= 40.   40nswer 40
<result>A</result>
If the sum of two numbers is 22 and the sum of their squares is 404, then the product of the numbers is