Question

Find the 20th term from the end (last term) of the A.P. 3,8,13, ….. , 253 . *​

Answer 1

Your answer dear ✌️✌️.....158

Solution:

we have last term(l)=253

And, Common difference (d)= 8-3=5

threfore 20th term from the end = l - (20-1)d

= l - 19d

=253-19×5

= 253-95

= 158