A) \[9,10,11\]
B) \[9,10,12\]
C) All natural numbers
D) None of these
Correct Answer: D
Solution :
[d] Given function is defined if \[^{10}{{C}_{x-1}}>{{3}^{10}}{{C}_{x}}\] or \[\frac{1}{11-x}>\frac{3}{x}\,\,or\,\,4x>33\,\,or\,\,x\ge 9\] But \[x\le 10\therefore x=9,10\]
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