Which is the first negative term of AP 35,30,25.....
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Answered by
16
Answer:
9
Step-by-step explanation:
First term a=35
Difference d=-5
nth term of an A.P=a+(n-1)d
If we observe the series we get 0 at one point. So, If we find out which term is 0 then the next term will be first negative term.
Let nth term be 0
0=35+(n-1)(-5)
0=35-5n+5
0=40-5n
5n=40
n=8
As, 8th term is zero, the next term should be negative which is 9th
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8
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