Which of the following is closer to (6!+4!)*(6!-4!)?  Select:
A) 587945  B) 647280  C) 587920  D) 658230  E) 954120
Notice that 6! = (6*5)(4!)   (6!+4!)*(6!-4!)=[6!(30+1)]*[6!(30-1)]   = 21/19   ≈ 647280   Answer: 647280
<result>B</result>
Which of the following is closer to (6!+4!)*(6!-4!)?