Which term of term of the AP 3,8,13,18,….. is 88?
Which term of term of the AP 3,8,13,18,….. is 88?
4 views
1 Answers
In the given AP, first term, a = 3 and
common difference, a = (8 - 3) = 5.
Let’s its nth term be 88
Then, Tn = 88
\(\Rightarrow\) a + (n - 1) d = 88
\(\Rightarrow\) 3 + (n - 1) x 5 = 88
\(\Rightarrow\) 5n - 2 = 88
\(\Rightarrow\) 5n = 90
\(\Rightarrow\) n = 18
Hence, the 18th term of the given AP is 88.
4 views
Answered