The first term of an $A.P.$ is denoted by $\ldots \ldots \ldots \ldots .$
- A$d$
- B$a$
- C$l$
- D$n$
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Similar Questions
For a given $A.P.$,the common difference is $5$ and its $15^{th}$ term is $72$. Find the first term of the $A.P.$ and its $50^{th}$ term.
Medium
View SolutionFind the $12^{\text{th}}$ term from the end of the $AP: -2, -4, -6, \ldots, -100$.
Medium
View SolutionFind the sum of all the $11$ terms of an $AP$ whose middle most term is $30$.
Difficult
View SolutionFind the sum:
$\frac{a-b}{a+b}+\frac{3a-2b}{a+b}+\frac{5a-3b}{a+b}+\ldots$ to $11$ terms.
$\frac{a-b}{a+b}+\frac{3a-2b}{a+b}+\frac{5a-3b}{a+b}+\ldots$ to $11$ terms.
Difficult
View SolutionThe eighth term of an $AP$ is half its second term and the eleventh term exceeds one third of its fourth term by $1$. Find the $15^{\text{th}}$ term.
Difficult
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