Question

if the 3rd and 9th terms of an A.P are 10 and 4 respectively which term of the A.P is zero​

Answer 1

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Answer 2

Answer:

hey ...xd...here's ur answer

an=a+(n−1)d

a3=4=a+2d ....(1)

a9=−8=a+8d ....(2)

∴4−2d=−8d−8

−2d+8d=−8−4

6d=−12

d=−2

a=4−2d

=4+4=8

an=0,a=8,d=−2

0=8+(n−1)×(−2)

0=8−2n+2

2n=10

n=5

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