Question

FIND THE 20TH TERM of a.p. 3,8,13,.......253 From the post​

Answer 1

Answer:

158

Step-by-step explanation:

Solution :

We have, l = Last term = 253

and,

              d = Common difference = 8 - 3 = 5

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

                                          = l - 19d

                                          = 253 - 19 × 5

                                          = 253 - 95 = 158