Which term of a ap 21 18 15 ........ is zero?
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Answered by
33
let first term =a=21
common difference = d = 18-21 = -3
Let nth term be 0
then applying An = a+( n-1 ) d
0=21+( n-1) (- 3 )
-21 = (n - 1 ) (-3)
n-1=7
n=8
therefore 8th term of the AP is 0.
common difference = d = 18-21 = -3
Let nth term be 0
then applying An = a+( n-1 ) d
0=21+( n-1) (- 3 )
-21 = (n - 1 ) (-3)
n-1=7
n=8
therefore 8th term of the AP is 0.
Answered by
6
Answer:
Step-by-step explanation:f
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