find 9th term from end of the AP 5, 9 ,13 up to so onn
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a=5
d=9-5=4
n =9
tn =a+(n-1)d
5+(9-1)4
5+8×4
5+32
37
d=9-5=4
n =9
tn =a+(n-1)d
5+(9-1)4
5+8×4
5+32
37
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