Answer :
tn=a+(n-1)d
here
a=122
d=-6
tn=122+(n-1)-6
=122-(n-1)6
so here the value of tn will be negative when the value of n is
should be greater than or equal to 22
here
a=122
d=-6
tn=122+(n-1)-6
=122-(n-1)6
so here the value of tn will be negative when the value of n is
should be greater than or equal to 22