Question

the common difference of an A.P whose 4 the term is 19th and 7 the term is 28 is​

Answer 1

Answer:

d=3

Step-by-step explanation:

given : 4th term = a+3d = 19

7th term = a+6d= 28

solving, a+3d=19 and a+6d=28

we get ,

-3d = -9

d=3

hence the common difference of the given ap is 3

( hope this helps you ! )