Question

in A.P if d=-4,n=7,an=4 then a is

Answer 1

Answer:

An = a + (n-1) d

4 = a + (7-1) (-4)

4 = a -24

a = 24+4 = 28

A.P. = 28 , 24 , 20 , 16 ....

Answer 2

Answer:

Given - d,= (-4)

n = 7.

an = 4

To find - A

solution -

an = a + (n -1)d

4 = a + (6)(-4)

4 = a - 24

a = (-24)-4

a = (-28)