4. Which term of the AP 21, 18,
15, ... , is zero?
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Answer:
given AP 21,18,15..
a= 21 d =-3
we need to find which term is zero so An=0
An =a+(n-1)d
0 = 21+(n-1)(-3)
0 = 21-3n+3
0 = 24-3n
-24=-3n
24/3=n
8 = n
8th term of the AP is 0
Answered by
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Answer:
8th term is 0.
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