Question

The first term of an arithmetic Sequence
is 8 and last term is 62. If Sum is 350
Find the no. of terms

Answer 1

Answer:

10 terms in this arithmeticseries

Answer 2

Answer:

n= 10

Step-by-step explanation:

Given:

a= 8

$a_{n}$= 62

$S_{n}$= 350

∴ $S_{n}= \frac{n}{2} (a+a_{n})$

∴ 350= $\frac{n}{2}(8+62)$

∴ 350 * 2= n(70)

∴ $\frac{700}{70}= n$

∴ n= 10