Discussion
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- Question
If ab+ba=1, then the value of a3+b3 is
Options- A. 1
- B. 0
- C. -1
- D. 2
- Correct Answer
- 0
- 1. If a2+b2+c2=14 and a+b+c=6 , then the value of ab+bc+ca is,
Options- A. 11
- B. 12
- C. 13
- D. 14 Discuss
- 2. The radius of base of a right circular cone is 6cm and its slant height is 10cm. Then its volume is (use ?=227)
Options- A. 301.71 cm3
- B. 310.71 cm3
- C. 301.17 cm3
- D. 310.17 cm3 Discuss
- 3. The orthocentre of an obtuseangled triangle lies
Options- A. inside the triangle
- B. outside the triangle
- C. on one side of a triangle
- D. none of these Discuss
- 4. In a circle, two arcs of unequal length subtend angles in the ratio 5:3. If the smaller angle is 45° then the measure of other angle in degrees.
Options- A. 75°
- B. 72°
- C. 60°
- D. 78° Discuss
- 5. Simplify the equation 0.733+0.2730.732+0.272-0.73×0.27
Options- A. 1
- B. 0.4087
- C. 0.73
- D. 0.27 Discuss
- 6. A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ?ATC = 30° and ?ACT = 48°,then what is the value of ?AOB ?
Options- A. 78°
- B. 96°
- C. 102°
- D. 108° Discuss
- 7. If 3sin?+4cos?=5 (0
Options- A. 1/5
- B. 2/5
- C. 3/5
- D. 4/5 Discuss
- 8. If 11-13xx + 11-13yy + 11-13zz = 5 then what is the value of 1x + 1y + 1z = ?
Options- A. 1
- B. 13/11
- C. 13/5
- D. 4 Discuss
- 9. If 2x + (9/x) = 9, then what is the minimum value of x2+1x2 = ?
Options- A. 95/36
- B. 97/36
- C. 87/25
- D. 623/27 Discuss
- 10. If (5x ? y)/(5x + y) = 3/7, then what is the value of (4x2 + y2 ? 4xy)/(9x2 + 16y2 + 24xy) ?
Options- A. 0
- B. 3/7
- C. 18/49
- D. 1/6 Discuss
Simplification problems
Search Results
Correct Answer: 11
Correct Answer: 301.71 cm3
Correct Answer: outside the triangle
Correct Answer: 75°
Correct Answer: 1
Correct Answer: 108°
Correct Answer: 3/5
Correct Answer: 4
Correct Answer: 97/36
Correct Answer: 0
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