Art of Problem Solving

AoPS Online

1962 AHSME Problems/Problem 12

Revision as of 21:35, 9 November 2013 by Fadebekun (talk | contribs) (Created page with "==Problem== When <math>\left ( 1 - \frac{1}{a} \right ) ^6</math> is expanded the sum of the last three coefficients is: <math> \textbf{(A)}\ 22\qquad\textbf{(B)}\ 11\qquad\text...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Problem

When $\left ( 1 - \frac{1}{a} \right ) ^6$ is expanded the sum of the last three coefficients is:

$\textbf{(A)}\ 22\qquad\textbf{(B)}\ 11\qquad\textbf{(C)}\ 10\qquad\textbf{(D)}\ -10\qquad\textbf{(E)}\ -11$

Solution

"Unsolved"

Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=1962_AHSME_Problems/Problem_12&oldid=57539"

© 2025 AoPS Incorporated