Medium
Find the 20th term of the AP: 3, 8, 13, ...
Explanation
Explanation
The nth term of an AP is aₙ = a + (n-1)d, where a = 3 (first term) and d = 5 (common difference). So the 20th term = 3 + (20-1)(5) = 3 + 95 = 98.
PRO TIP
Re-check your working by substituting the answer back into the original question.