Find sum of the following series up to 12th term
–6, –4, –2, 0, 2, 4, 6, 8, …………..
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Answered by
1
60 is the right answer
Answered by
6
Answer:
Here is ur answer....
Step-by-step explanation:
sequence is -6,-4,-2..….
n=12
Common difference=x2-x1= -4--6= -4+6=2
xn =an+b
b=x1- a
= -6 -2
= -8
xn=2n+- 8
2n- 8
2×12 -8
=24 -8
=16
sn=n/2 (xn+x1)
sn=12/2 (16+ -6)
=6× (16 - 6)
=6×10
=60
Hope it help u...☺️☺️
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