A) 9
B) 0
C) 5
D) 10
Correct Answer: C
Solution :
If\[n\]is an odd number, then total number of terms in the expansion of\[{{(x+a)}^{n}}+{{(x-a)}^{n}}\]of is\[\frac{n+1}{2}\]. \[\therefore \]In the expansion of\[{{(1+3\sqrt{2x})}^{9}}+{{(1-3\sqrt{2}x)}^{9}},\] the total number of terms\[=\frac{9+1}{2}=5\]You need to login to perform this action.
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