Question

if an = 26 -4n then its 10 th term is

Answer 1

Answer:

Step-by-step explanation:

6th Term

a+5d = -10  (i)

10th Term

a+9d = -26  (ii)

Equating equation (i)&(ii)

-4d = -16

d=4

Putting the value of d in eqn (i)

a+5 (4)= -10

a = -10-20

a = -30

15th Term

a+14d

-30+14 (4)

-30+56

26

So, the 15th term of A.P is

26