Answers

2016-06-16T20:36:50+08:00
P=3, H=1, I=3, L=1, N=1, E=1, S=1, n=11
Distinguishable Permutation
P(n,r) = n!/p!q!r!...
= 11!/3!3!
=11.10.9.8.7.6.5.4.3.2.1/ (3.2.1)(3.2.1)
cancel 3.2.1 above and below, then 3.2.1 below and 6 above. (3.2.1=6)
=11.10.9.8.7.5.4= 1,219,680
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