Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
A. 11 B. 3 C. 8 D. 5 Answer: Option DShow Answer
Solution(By Apex Team)
In two A.P.’s common-difference is same
Let A and a are two A.P. ’s
First term of A is 8 and first term of a is 3
$\begin{array}{l}
A_{30}-a_{30}=8+(30-1) d-3-(30-1) d \\
=5+29 d-29 d \\
=5
\end{array}$
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