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60!-59!
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09 Dec 2017, 16:21
09 Dec 2017, 16:21
1
Expert Reply
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Question Stats:
100% (00:40) correct
0% (00:00) wrong based on 16 sessions
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\(\frac{60! - 59!}{58!}\)
A. \((59)(58)\)
B. \((60)(59)\)
C. \((58)^2\)
D. \((59)^2\)
E. \((60)^2\)
A. \((59)(58)\)
B. \((60)(59)\)
C. \((58)^2\)
D. \((59)^2\)
E. \((60)^2\)
Re: 60!-59!
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09 Dec 2017, 20:29
09 Dec 2017, 20:29
The numerator has a common factor 59!
60! can be rewritten as follows 60 * 59!
59 ! Stays as 59!
Therefore 59!(60-1)/59!
59! cancels out. So we are with 59.
I dont see the answer so I guess I got it wrong.
60! can be rewritten as follows 60 * 59!
59 ! Stays as 59!
Therefore 59!(60-1)/59!
59! cancels out. So we are with 59.
I dont see the answer so I guess I got it wrong.
Re: 60!-59!
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10 Dec 2017, 04:08
10 Dec 2017, 04:08
Expert Reply
Explanation
\(\frac{59!(60 - 1)}{58!}\)
Simplify and the fraction becomes \(\frac{59*58!(60-1)}{58!}\).
Actually, we do have
\(59*59 = 59^2\)
D is the answer
\(\frac{59!(60 - 1)}{58!}\)
Simplify and the fraction becomes \(\frac{59*58!(60-1)}{58!}\).
Actually, we do have
\(59*59 = 59^2\)
D is the answer
