Question

find the value of n . if a =6, d= 10 and an =15​

Answer 1

Answer:

Given :- a=6 , d=10 , an=15

therefore, an= a + (n-1) d

put the value which are given

15 = 6 + (n - 1) 10

15 -6 = 10n-10

9 = 10n-10

9-10 = 10n

-1 = 10n

-1/10=n

may it helps u