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Question
Find the 8th term from the end of the AP 7 , 10, 13, ..., 184.
Find the 8th term from the end of the AP 7 , 10, 13, ..., 184.
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Solution
AP is 7 , 10, 13, ..., 184.
nth term from the end is l=(n−1)d
where l = last term = 184
d = common difference = 10 - 7 = 3
8th term =184−(8−1)3=184−7×3=184−21=163
AP is 7 , 10, 13, ..., 184.
nth term from the end is l=(n−1)d
where l = last term = 184
d = common difference = 10 - 7 = 3
8th term =184−(8−1)3=184−7×3=184−21=163
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