Vikramaditya00 wrote:
I think this is a high-quality question and the explanation isn't clear enough, please elaborate. I understood 3c1, but 3c9 comes out to 84 so shoudnt the ans be 9/84 ( this ans not given in options)? I am nopt able to understand where is 328 coming from
\(P=\frac{C^1_3*C^1_3*C^1_3}{C^3_9}=\)
\(=\frac{3*3*3}{(\frac{9!}{6!3!})}=\)
\(=\frac{3*3*3}{7*4*3}=\)
\(=\frac{9}{28}\)
Statistics : Posted by Bunuel • on 16 Sep 2014, 00:55 • Replies 8 • Views 13053
