check _140 is the term of A. P 3,15,27,39 or not
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Answered by
1
an=a+(n-1)d
140=3+(n-1)12
140=3+12n-12
140=12n-9
12n=149
n=149/12
n is a fraction
Therefore 140 is not a term of the given ap
Answered by
0
Answer:
Not a term
Step-by-step explanation:
a= 3
d=12
an= 140
Hence, a+(n-1)d = 140
3+(n-1)12=140
12(n-1)= 137
n-1= 137/12
n= 11.4166+1= 12.416666
Hence, it is not a term of the AP as n is supposed to be a whole number.
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