A) 28
B) 30
C) 36
D) 31
Correct Answer: D
Solution :
[d] Let the number of terms be n. It is an arithmetic series whose first term, \[a=1\] and common difference, \[d=2\] \[\therefore \] nth term \[=a+(n-1)\,\,d\] \[\Rightarrow \] \[75=1+(n-1)\,2\] \[\Rightarrow \] \[2\,\,(n-1)=74\] \[\Rightarrow \] \[n-1=\frac{74}{2}=37\] \[\therefore \] \[n=37+1=38\] |
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