
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 30th, 2016, 02:08 AM  #1 
Senior Member Joined: Jul 2011 Posts: 401 Thanks: 15  Coefficient in binomial expansion
The coefficients of $x^9$ in the expansion of $(1+x)(1+x^2)(1+x^3)...........(1+x^{2016})$

September 30th, 2016, 06:31 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,641 Thanks: 625 
9=9 1+8=9 2+7=9 3+6=9 4+5=9 1+2+6=9 1+3+5=9 2+3+4=9 8 items Coefficient = 8. Expansion is not binomial! 

Tags 
binomial, coefficient, expansion 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Find the coefficient of x^4 in the expansion...  Furai  Algebra  3  August 27th, 2016 02:45 PM 
Coefficient find in expansion of a term  Shen  Algebra  1  January 17th, 2015 03:47 PM 
Binomial Coefficient problem  pikachu26134  Number Theory  3  July 26th, 2011 08:03 PM 
Binomial coefficient (padic)  sunflower  Number Theory  0  April 2nd, 2011 08:15 AM 
Binomial Coefficient Proof  coolhandluke  Applied Math  1  March 26th, 2010 05:55 PM 