Question

In an AP The third and the seventh terms are 14 and -2 respectively which term of AP Is -14​

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

a3=14. a7=-2
a+2d=14....(1) a +6d=-2.....(2)

a+6d=-2. (change the sign)...
a+2d=14

4d =-16
d=-16/4
(d=-4)

a+2d=14
a+2(-4)=14
a-8=14
a=14+8
(a=22)

an=a+(n-1) d
-14=22+(n-1)-4
-14-22=(n-1)-4
-36=(n-1)-4
36/4=n-1
9=n-1
[n=10]


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