Which of the following is closer to (21!+20!)/(21!-20!)?
Choose the correct choice from the following choices.
A) 49	B) 36	C) 25	D) 16	E) 1
Notice that 21! = (21)(20!), so we can factor out 20! from top and bottom.   (21!+20!)/(21!-20!)=[20!(21+1)]/[20!(21-1)]   = (21+1)/(20-1)   = 22/19   ≈ 1   Answer: 1
<result>E</result>
Which of the following is closer to (21!+20!)/(21!-20!)?