Math, asked by mdsaleem4584, 21 hours ago

find the value of n for the ap 9 ,18 ,99

Answers

Answered by adwyethm

0

Step-by-step explanation:

it is the correct answer

Attachments:

Answered by iqbalmalik7111

0

Answer:

a=9 d= a2 -a1

=18-9=9

an=99

therefore

an= a+(n-1)d

99=9+(n-1)9

99-9=(n-1)9

90=(n-1)9

90÷9=n-1

10=n-1

n=10+1

=11

n=11..

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