A) 90
B) 84
C) 78
D) None of these
Correct Answer: B
Solution :
[9 cases] \[0\,0\,0\,0\,0\,0\,0\,0\,0={}^{9}{{C}_{3}}=84\] |
Or co-eff. of \[{{x}^{6}}\] in |
\[{{(1+x+{{x}^{2}}+{{x}^{3}}+{{x}^{4}}+{{x}^{5}}+{{x}^{6}})}^{4}}\] Treat W, B, G, R, as beggar] |
You need to login to perform this action.
You will be redirected in
3 sec