Discussion
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- Question
If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?
Options- A. 5
- B. 7
- C. 1
- D. -5
- Correct Answer
- 1
- 1. If [7(5x/3 - 3/2)]/2 + 3/2 = 1/4, then what is the value of x?
Options- A. 35/24
- B. 24/35
- C. -24/35
- D. -35/24 Discuss
- 2. A, B and C can finish a job working alone in 72, 24 and 36 days respectively. In how many days they can finish the job if they worked together?
Options- A. 12
- B. 9
- C. 15
- D. 18 Discuss
- 3. D and E are the points on the sides AB and AC respectively of a ?ABC and AD = 8 cm, DB = 12 cm, AE= 6 cm and EC = 9 cm, then BC is equal to:
Options- A. 2/5 DE
- B. 5/2 DE
- C. 3/2 DE
- D. 2/3 DE Discuss
- 4. If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b
Options- A. 0
- B. -1
- C. 2
- D. 3 Discuss
- 5. If a = ?2 + 1 and b = ?2 - 1, then the value of 1a+1+1b+1 will be
Options- A. 0
- B. 1
- C. 2
- D. -1 Discuss
- 6. What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
Options- A. 67
- B. 45
- C. -30
- D. -48 Discuss
- 7. What is the reflection of the point (5, 2) in the line x = -3?
Options- A. (-11 ,2)
- B. (-11 ,-2)
- C. (11 ,-2)
- D. (11 ,2) Discuss
- 8. What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(4, 0) and C(-2, 2)?
Options- A. (1 , -1)
- B. (-1 , 1)
- C. (2 , -2)
- D. (-2 , 2) Discuss
- 9. Slope of the line AB is -4/3. Co-ordinates of points A and B are (x, -5) and (-5, 3) respectively. What is the value of x?
Options- A. -1
- B. 2
- C. -2
- D. 1 Discuss
- 10. What is the value of ?2 Sec 45 - Tan 30?
Options- A. (2?3 - 1)/3
- B. (?3 - 1)/?3
- C. (2?3 - 1)/?3
- D. (?3 - 1)/3 Discuss
Simplification problems
Search Results
Correct Answer: 24/35
Correct Answer: 12
Correct Answer: 5/2 DE
Correct Answer: -1
Correct Answer: 1
Correct Answer: -30
Correct Answer: (-11 ,2)
Correct Answer: (1 , -1)
Correct Answer: 1
Correct Answer: (2?3 - 1)/?3
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