Question

If a = 2
D = 5

Sum up to ten termz
In AP

Answer 1

$\huge{\mathcal{\purple{A}\green{n}\pink{s}\blue{w}\purple{E}\green{r}}}$

Given, AP:1,2,3,4,5….,an

n=15

By the formula we know, an = a+(n-1)d

First-term, a =1

Common difference, d=2-1 =1

Therefore, an = 1+(15-1)1 = 1+14 = 15

Note: The finite portion of an AP is known as finite AP and therefore the sum of finite AP is known as arithmetic series. The behaviour of the sequence depends on the value of a common difference.

If the value of “d” is positive, then the member terms will grow towards positive infinity

If the value of “d” is negative, then the member terms grow towards negative infinity

Answer 2

$\huge\mathbb\red{Answer:-}$

Given, AP:1,2,3,4,5….,an

Given, AP:1,2,3,4,5….,ann=15

By the formula we know, an = a+(n-1)d

First-term, a =1

Common difference, d=2-1 =1

Therefore, an = 1+(15-1)1 = 1+14 = 15

Note: The finite portion of an AP is known as finite AP and therefore the sum of finite AP is known as arithmetic series. The behaviour of the sequence depends on the value of a common difference.

If the value of “d” is positive, then the member terms will grow towards positive infinity

If the value of “d” is negative, then the member terms grow towards negative infinity