A) 55
B) 49
C) 48
D) 54
Correct Answer: D
Solution :
General term, \[{{T}_{r+1}}{{=}^{60}}{{C}_{r}},7\frac{60-r}{5}\frac{r}{{{3}^{10}}}\] |
\[\therefore \] for rational term, |
\[r=0,10,20,30,40,50,60\] |
\[\Rightarrow \]Number of rational terms \[=7\] |
\[\therefore \]Numebr of irrational terms\[=54\] |
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