An Important question based on Arithmetic progression Chapter of R.S Aggarwal book for ICSE & CBSE Board.
Here the AP is given. You have to find the nth term from the end of the AP.
This is the Question Number 23 Exercise 11 A of RS Aggarwal Solution.
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Find the 8th term from the end of the AP 7, 10, 13, ……, 184.
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Given AP is 7, 10, 13,…, 184
a = 7, d = 10 – 7 = 3 and l = 184
nth term from the end = l – (n – 1)d
Now,
8th term from the end be
=184 – (8 – 1)3
= 184 – 21
= 163