Which term of the A.P. 24, 21, 18, ............ is the first negative term?
A. 8th
B. 9th
C. 10th
D. 12th
Answer: Option C
Solution(By Examveda Team)
an = a + (n - 1) × d where d = -3, Let an = 0⇒ 0 = 24 + (n - 1) × -3
⇒ 0 = 24 - 3n + 3
⇒ 3n = 27
⇒ n = 9
⇒ 10th term will be negative (-ve)
Related Questions on Progressions
Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
A. 5
B. 6
C. 4
D. 3
E. 7
The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
A. 600
B. 765
C. 640
D. 680
E. 690
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