Question

good morning guys... can anyone answer this?

Answer 1

hope it is helpful for you

Answer 2

Hi ,

121 , 117 , 113 , ... is an A.P

First term = a = 121 ,

Common difference ( d ) = a2 - a1

d = 117 - 121

d = -4

Let us assume n th term of an A. P

is negative ,

an = a + ( n - 1 )d < 0

121 + ( n - 1 ) ( - 4 ) < 0

121 - 4n + 4< 0

125 - 4n < 0

-4n < -125

4n > 125

n > 125/4

n > 31

Therefore ,

32 nd term in given A. P is negative.

I hope this helps you.

: )