Seris -2 , 0 , 2 , 4 is 80
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The given series is in A.P , where ;
a = -2
d= 0-(-2) = 2
Tn = 80
n = ?
Tn = a+(n-1)d
80 = (-2)+(n-1)2
80 = (-2)+2n-2
2n = 84
n = 42
hence 80 is 42nd term of given series.
a = -2
d= 0-(-2) = 2
Tn = 80
n = ?
Tn = a+(n-1)d
80 = (-2)+(n-1)2
80 = (-2)+2n-2
2n = 84
n = 42
hence 80 is 42nd term of given series.
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