Hmmmmm
Level
pending
Find the 20th term from the last term of the AP : 3, 8, 13, .... 253.
154
160
158
155
156
157
159
161
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1 solution
AP: 3, 8 ,13, ... 253
Here the first term (a) is 3 the common difference (d) is 5
As we need the 20th term from the last Therefore,
a = 253 , d = -5
Now, 20th term = a + 19d = 253 + 19 x -5 = 158