If the sum of two numbers is 12 and the sum of their squares is 124, then the product of the numbers is  Choose one:
A) 10	B) 44	C) 80	D) 88	E) 90
Sol.   Let the numbers be x and y.   Then, (x+y) = 12 and x2 + y2 = 124.   Now, 2xy = (x+y)2 - (x2 + y2)   = (12)2 - 124 = 144 - 124= 
<gadget id="calculator">144 - 124</gadget>
<output>20</output>
20   xy= 10.   10nswer 10
<result>A</result>
If the sum of two numbers is 12 and the sum of their squares is 124, then the product of the numbers is