Functions Question 461
Question: The domain of the function f(x)= $ \frac{1}{\sqrt{^{10}{C_{x-1}}-3{{\times }^{10}}C_{x}}} $ contains the points
Options:
A) $9, 10, 11$
B) $ 9,10,12 $
C) All natural numbers are positive integers starting from 1
D) None of these
Show Answer
Answer:
Correct Answer: D
Solution:
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 $
BETA
