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Which term of the AP 3, 8, 13, 18, … is 88? |
Answer» Let nth term is 88. AP is 3, 8, 13, 18, … Here, First term = a = 3 Common difference = d = 8 – 3 = 5 nth term of AP is a_n = a + (n – 1) d Now, 88 = 3 + (n – 1)(5) 88 – 3 = (n – 1) x 5 n – 1 = 88 /5 or n = 17 + 1 = 18 Therefore: 88 is the 18th term. |
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