determine the ap whose 3rd term is 5 and the 7th term is 9?
Answers
Answered by
24
3rd term = 5
a+2d = 5.......(1)
7th term = 9
a+6d = 9........(2)
(2) - (1)
a+6d=9
-(a+2d=5)
4d=4
d=4/4
d=1
put the value of d in equation (1)
a+2d=5
a+2(1)=5
a+2=5
a=5-2
a=3
a.p. series are:- 3,4,5,6,7,8,9,......
a+2d = 5.......(1)
7th term = 9
a+6d = 9........(2)
(2) - (1)
a+6d=9
-(a+2d=5)
4d=4
d=4/4
d=1
put the value of d in equation (1)
a+2d=5
a+2(1)=5
a+2=5
a=5-2
a=3
a.p. series are:- 3,4,5,6,7,8,9,......
Answered by
7
A3=5
A7=9
a+2d=5
a+6d=9
-4d=-4
d=1
a=3
ap is 3,4,5.......
A7=9
a+2d=5
a+6d=9
-4d=-4
d=1
a=3
ap is 3,4,5.......
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