Question

Find the 9th term from the end (towards the first term) of the Ap 5, 9 ,13 ..... 185. also find the middle term/s

Answer 1

ap will be reversed

185...13,9,5

a=185,d=-4

a9=a+(n-1)d

=185 + (9-1)-4

=185 + (8 × -4)

=185 -32

=153

Answer 2

Answer:

153,93

Step-by-step explanation:

185-[8]4

185-32

=153

185=5+[n-1]4

n=45

mid term is 23

a+22d=23 term

5+22*4

93

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