76. Which term of the AP 121, 117, 113, ...,
is its first negative term?
(A) 31st
(B) 32nd
(C) 33rd
(D) 34th
Answers
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2
Answer is:
(B) 32nd term will be the first negative term of this AP
Because:
Let the term be ‘n’
Then it will be less than zero
So,
0=121 +(n-1)-4
0=121 -4n + 4
0=125 -4n
4n=125
n=31.25
So
Approx 32nd will be the first negative term
(B) 32nd term will be the first negative term of this AP
Because:
Let the term be ‘n’
Then it will be less than zero
So,
0=121 +(n-1)-4
0=121 -4n + 4
0=125 -4n
4n=125
n=31.25
So
Approx 32nd will be the first negative term
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