Question

Which term of AP 150,147,144 is its first negative number

Answer 1

51 th term is its first negative number and it is -3

Answer 2

here difference is d= -3
:- as we know Tn = a+(n-1)d
so put Tn=0
150+(n-1) (-3)=0
n=51
it means that first negative term is 52