Discussion
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- Question
If a = 2 , b = 3 then the value of 27a3 - 54a2b + 36ab2 - 8b3 is
Options- A. 1562
- B. 1616
- C. 1676
- D. 1728
- Correct Answer
- 1728
- 1. If x+19x=4 , then 9x2+19x2 is
Options- A. 140
- B. 142
- C. 144
- D. 146 Discuss
- 2. If sec? = cosecq with 0° < ? , q < 90°, then the value of sin (? + q) is
Options- A. 1
- B. 0
- C. 2
- D. 4 Discuss
- 3. If ab+ba = -1 , then the value of a2b-b2a is
Options- A. 1
- B. -1
- C. 0
- D. 2 Discuss
- 4. If cosec ? + sin? = 5/2 then the value of cosec? - sin? is
Options- A. -3/2
- B. 3/2
- C. ??3/2
- D. ?3/2 Discuss
- 5. If x = 313- 3-13 , then 3x2 + 9x is equal to
Options- A. 5
- B. 6
- C. 7
- D. 8 Discuss
- 6. If in a triangle ABC, Sin A = Cos B then the value of Cos C is
Options- A. ?3/2
- B. 0
- C. 1
- D. 1/?2 Discuss
- 7. If sin? x cos? = 1?2 . The value of sin? - cos? is where 0°< ?< 90°
Options- A. 0
- B. ?2
- C. 2
- D. 1 Discuss
- 8. If a3+1a3 = 2, then the value of a2+1a ?
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 9. If x3-2x=3x , then the value of x2+1x2 will be
Options- A. 3 1/9
- B. 3 2/9
- C. 2 1/9
- D. 2 4/9 Discuss
- 10. A sphere of radius 5 cm is melted to form a cone with base of same radius. The height (in cm) of the cone is
Options- A. 5
- B. 10
- C. 20
- D. 22 Discuss
Simplification problems
Search Results
Correct Answer: 142
Correct Answer: 1
Correct Answer: 0
Correct Answer: 3/2
Correct Answer: 8
Correct Answer: 0
Correct Answer: 0
Correct Answer: 2
Correct Answer: 2 4/9
Correct Answer: 20
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