. terms of the series \[63+65+67+69+.........\] and \[3+10+17+24+......\] be equal, then 
[Kerala (Engg.) 2002]
A) 11
B) 12
C) 13
D) 15
Correct Answer: C
Solution :
Given series \[63+65+67+69+......\] ?..(i) and \[3+10+17+24+......\] ?.. (ii) Now from (i), \[{{m}^{th}}\] term \[=(2m+61)\] and \[{{m}^{th}}\] term of (ii) series \[=(7m-4)\] Under condition, \[\Rightarrow 7m-4=2m+61\Rightarrow 5m=65\Rightarrow m=13\].
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