if a is equal to minus 2 common difference equal to minus 2 find 4th term
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fourth term = third term+common difference
1st term= -2
2nd term = 1st term+cd
=-2+2=0
3rd term=2nd term+cd
=0+2=2
4th term =3rd term+cd
answer=2+2="4"
1st term= -2
2nd term = 1st term+cd
=-2+2=0
3rd term=2nd term+cd
=0+2=2
4th term =3rd term+cd
answer=2+2="4"
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