Is 201 a term of arithmetic sequence 9, 12, 15
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Answer:
n=64
Step-by-step explanation:
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Answer:
Yes, 201 is a term of 65th in the given A.P.
Step-by-step explanation:
A.P= 9,12,15,...
a=9
d=12-9= 3
A(n)=201
n=?
ATQ:
A(n)=a+(n-1)d
201=9+(n-1)3
201=9+3n-3
201=6+3n
201-6=3n
195=3n
n=65
hence, yes 201 is a term of 65th in the given A.P.
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