Question

find the 27th term of the following A. P
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Answer 1

☆Solution:~

A=9,n=27

d=4−9

=−5

☆Putting the values in below formula

a2 7=a+(n−1)d

a2 7=9+(27−1)×−5

=9+(−130)

=9−13

=−121

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