Question

b) 24
Ques23 Nine times the ninth term of an A.P is ten times the
tenth term of the same. find the nineteenth term of the
geries-
(a) o
(b) -1
(o
(d) None​

Answer 1

Answer:

d

Step-by-step explanation:

9 × t9 = 10×t10

9(a+8d)= 10(a+9d)

9a+72d= 10a+90d

72d-90d=10a-9a

a= -18

so it is none of these options.....