Which term of the A.P. 109,105,…..is first negative term? *
27,
28,
29,
None of these
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Answered by
0
Answer:
7
Step-by-step explanation:
ANSWER
Given,
a=17
d=14−17=−3
T
n
<0
a+(n−1)d<0
17+(n−1)(−3)<0
17−n+3<0
n>
3
20
⇒n=7
7th term is the first negative term
T
7
=17+(7−1)(−3)=−1
Hence verified.
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27 is the answer first negative term.
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