Find the 20th term from the last term of the arithmeticprogression 3, – InterviewSolution

1.	Find the 20th term from the last term of the arithmeticprogression 3, 8, 13,.. 253
Answer» write a.p.in reverse order 253.....,13,8,3.here a=253,d=-8 and n=20so a20= a+(n-1)d a20=253+19×-5 a20=253-95 a20=158so,the 20th term from last term is 158

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