Medium
In an AP, the first term is 5 and the common difference is -1. Which term of the AP is 0?
Explanation
Explanation
Using aₙ = a + (n-1)d, set a + (n-1)d = 0: 5 + (n-1)(-1) = 0. Solving, (n-1) = (0 - 5)/-1 = 5, so n = 6. Thus 0 is the 6th term.
PRO TIP
Re-check your working by substituting the answer back into the original question.