how many terms of ap -15,-13,-11,... needed to make the sum -5
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Answered by
10
Hey Mate Heres ur ans. ;
Given:
a=-15
d=2
an=-5
By using formula;
an=a+(n-1)d
- 5=-15+(n-1)2
- 5+15=(n-1)2
10/2=(n-1)
n = 5+1
n = 6
The 6th term of ap is - 5.
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Answered by
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