is 128 a term of the series 6+11+16+...?
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the series is 6+11+17.....
And last term is 128.
And d =2nd term - 1st term
d=11-6
=5
now let start
tn = a+(n-1)d
128=6+(n-1)5
128-6=5n-5
5n-5=122
5n=122+5
.°. 5n=127
n =127/5
NO
And last term is 128.
And d =2nd term - 1st term
d=11-6
=5
now let start
tn = a+(n-1)d
128=6+(n-1)5
128-6=5n-5
5n-5=122
5n=122+5
.°. 5n=127
n =127/5
NO
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