+0  
 
0
475
1
avatar+52 

what is the expression 400!/398! equivalent to?

 Jan 31, 2015

Best Answer 

 #1
avatar+99352 
+5

399×400

because

398!=1×2×3...×398

and

400!=1×2×3....×398×399×400

So

all the other factors cancel out. :)

 Feb 1, 2015
 #1
avatar+99352 
+5
Best Answer

399×400

because

398!=1×2×3...×398

and

400!=1×2×3....×398×399×400

So

all the other factors cancel out. :)

Melody Feb 1, 2015

36 Online Users

avatar
avatar
avatar