Discussion
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- Question
If x+1x=5, then 6xx2+x+1 value is
Options- A. 3
- B. 2
- C. 1
- D. 0
- Correct Answer
- 1
- 1. If 3n = 2187 , then the value of n is:
Options- A. 13
- B. 14
- C. 15
- D. 16 Discuss
- 2. If 2x+4-2x+2=3 , then the value of x?
Options- A. 0
- B. 2
- C. -1
- D. -2 Discuss
- 3. If x = a + 1/a, y = a - 1/a, then the value of x4+y4-2x2y2
Options- A. 4
- B. 8
- C. 16
- D. 64 Discuss
- 4. A 8 cm long perpendicular is drawn from the centre of a circle to a 12 cm long chord. The diameter of the circle is
Options- A. 10 cm
- B. 12 cm
- C. 16 cm
- D. 20 cm Discuss
- 5. If a+b=5 and ab=3, then the value of (a2+b2) is
Options- A. 17
- B. 18
- C. 19
- D. 20 Discuss
- 6. If sinA + sin2A =1 then what is the value of cos2A + cos4A
Options- A. 1/2
- B. 1
- C. 2
- D. 3 Discuss
- 7. A man spends in 8 months as much as he earns in 6 months. He saves Rs. 6000 in a year. His average monthly income is
Options- A. Rs. 2400
- B. Rs. 2000
- C. Rs. 2150
- D. Rs. 1800 Discuss
- 8. 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
- 9. 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
- 10. 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
Simplification problems
Search Results
Correct Answer: 14
Correct Answer: -2
Correct Answer: 16
Correct Answer: 20 cm
Correct Answer: 17
Correct Answer: 1
Correct Answer: Rs. 2000
Correct Answer: 1
Correct Answer: -1
Correct Answer: 5/2 DE
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