Consider the Arithmetic Progression: 3, 8, 13, 18, ...... What is the 18th term of the given Arithmetic Progression.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 88
The \(n\)th term of an arithmetic progression is \(a_n=a+(n-1)d\), where \(a\) is the first term and \(d\) the common difference: to reach the 18th term, the difference is added 17 times to the first term.
First term \(a=3\); common difference \(d=8-3=5\)
\(a_{18}=3+17\times5=3+85=88\)