Question

Which term of AP 67,65,63,61 .... is first negative term

Answer 1

Answer:

Hence, The 35th term is the first negative term of the given AP.

Answer 2

Answer:

35 th term

Step-by-step explanation:

let n be first negative term of AP

since An < zero

here a= 67, d= -2

a+ (n-1)d < zero

67 + (n-1) -2 <zero

-2n+2 >-67

( sign gets changed when term gets shifted to left side !!)

-2n>-69

2n > 69

n>34.5

so 35 term will be first negative term of AP