A) \[r+s\]
B) \[\frac{r-s}{r+s}\]
C) \[\frac{r+s}{r-s}\]
D) \[r+s+1\]
Correct Answer: A
Solution :
[A] \[\frac{{{t}_{p}}+{{t}_{q}}}{2}=\frac{{{t}_{r}}+{{t}_{s}}}{2}\] \[\Rightarrow a+(p-1)\,\,d+a+(q-1)\,\,d\] \[=a+(r-1)\,\,d+a+(s-1)\,\,d\] \[\therefore p+q=r+s.\]You need to login to perform this action.
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