CBSE BoardEnglish MediumSTD 11 ScienceMathsArithmetic Progressions2 Marks
Question
Which trem of the A.P. $3, 8, 13, ...$ os $248$?
✓
Answer
Let $n^{th}$ term of A.P. $= 248$
$\therefore\text{a}_\text{n}=248=\text{a}+(\text{n}-1)\text{d}$
$\Rightarrow248=3+(\text{n}-1)5$
$\therefore\text{n}=50$
$\therefore$ 50th term of the given A.P. is 248
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