Write the first three terms in each of the following sequences defined by the following:
$a_{n}=2 n+5$
Write the first three terms in each of the following sequences defined by the following:
$a_{n}=2 n+5$
Here $a_{n}=2 n+5$
Substituting $ n =1,2,3, $ we get
$a_{1} =2(1)+5=7, a_{2}=9, a_{3}=11$
Therefore, the required terms are $7,9$ and $11 .$
Similar Questions
The sides of a triangle are distinct positive integers in an arithmetic progression. If the smallest side is $10$, the number of such triangles is
The sides of a triangle are distinct positive integers in an arithmetic progression. If the smallest side is $10$, the number of such triangles is
- [KVPY 2012]
If $\frac{a}{b},\frac{b}{c},\frac{c}{a}$ are in $H.P.$, then
If $\frac{a}{b},\frac{b}{c},\frac{c}{a}$ are in $H.P.$, then
Write the first five terms of the sequences whose $n^{t h}$ term is $a_{n}=(-1)^{n-1} 5^{n+1}$
Write the first five terms of the sequences whose $n^{t h}$ term is $a_{n}=(-1)^{n-1} 5^{n+1}$
The sum of the first and third term of an arithmetic progression is $12$ and the product of first and second term is $24$, then first term is
The sum of the first and third term of an arithmetic progression is $12$ and the product of first and second term is $24$, then first term is
Let $3,7,11,15, \ldots, 403$ and $2,5,8,11, \ldots, 404$ be two arithmetic progressions. Then the sum, of the common terms in them, is equal to.....................
Let $3,7,11,15, \ldots, 403$ and $2,5,8,11, \ldots, 404$ be two arithmetic progressions. Then the sum, of the common terms in them, is equal to.....................
- [JEE MAIN 2024]