Question

Find the nth term of AP 1,2,3,4----an,if numbers of terms are 15

Answer 1

Answer:

AP-- 1,2,3,4,......., an

n=15

a=1

d=a2-a1=2-1

d=1

an=a+(n-1)d

=1+(15-1)1

=1+14

an=15

Answer 2

Answer:

=> The nth term of AP is 15.

Step-by-step explanation:

Given that:-

AP:- $1$, $2$, $3$, $4$, $5$…., $a_n$

To find:-

The nth term of the given AP,

So, n = 1 + 2 + 3 + 4 + 5 = 15

The formula to be used:-

=> $a_n = a+(n-1)d$

Here, first term = 1

The common difference,

=> $d = 2 -1 = 1$

Now, plug all the values in the formula:

Therefore,

=> $a_n = 1+(15-1)1$

By further calculation, we get

=> 1 + 14

=> 15

Hence, the value of $a_n = 15$.