Question

4. There are 'n' terms in an A.P. The fourth term from the beginning is which term from the last?​

Answer 1

$A4=8 {}^{}$

Answer 2

first term = a

common difference = d

fourth term from beginning = a4

total number of terms = n

4th term from last = a(n - 4)+1 = an-5

eg - 1, 3, 5, 7, 9

3= a2

from the last, 3 = a(5-2)+1 = a3+1 = a4