Progression Jamb Mathematics Past Questions
Question 6
The 3rd term of an A.P is 4x - 2y and the 9th term is 10x - 8y. Find the common difference.
- A. 19x - 17y
- B. 8x - 4y
- C. x - y
- D. 2x
Question 7
The sixth term of an A.P is half of its twelfth term. The first term of the A.P is equal to
- A. zero
- B. half of the common difference
- C. double the common difference
- D. the common difference
Question 8
The time taken to do a piece of work is inversely proportional to the number of men employed. if it takes 45 men to do a piece of work in 5 days, how long will it take 25 men?
- A. 15 days
- B. 12 days
- C. 5 days
- D. 9 days
Question 9
If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.
- A. 2a + 2 = 0
- B. 3a + 5d = 0
- C. a + 3d = 0
- D. a + 2d = 0
Question 10
The sum to infinity of the series: 1 + (1/3) + (1/9) + (1/27) + ... is
- A. 11/3
- B. 10/3
- C. 5/2
- D. 3/2
