CBSE Class 10 Answered
Expert Answer
Given Arithmetic progression (A.P. ) is
3, 8, 13, 18 .......................
First term a = 3 ;
Common difference d = 5 ;
nth term of A.P is
Hence if nth term is 78 , then we have
78 = 3 + (n-1) 5
from above expression , we get n = 16
Hence 78 is 16th term
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