Question

The 14th term of the A.P: 3,7,11,………….123 from the last term towards the first is​

Answer 1

SOLUTION– 71

Step-by-step explanation:

LET THE 14th TERM FROM THE LAST OF THE A.P. BE añ

THEREFORE ,

añ = l -(n -1)d.

{where l=last term(123), n= 14( req. term)& d= 7- 3= 4}

añ= 123 -(14-1)X 4

añ= 123 -52

añ= 71

HENCE, THE 14th TERM FROM THE LAST TOWARDS THE FIRST IN THE GIVEN A.P. IS 71