Practice Question and Answer
8 Q: If x2+y2+z2 = xy + yz + zx, then the value of $${3x^4+7y^4+5z^4}\over{5x^2y^2+7y^2z^2+3z^2x^2} $$ is
2013 05dca43e8582669277c292f17
5dca43e8582669277c292f17- 12false
- 21true
- 30false
- 4-1false
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Answer : 2. "1"
Q: Who won the men's singles title at Fuzhou China Open 2019?
1841 05dca7687d535a459c0419c48
5dca7687d535a459c0419c48- 1Chou Tien-chenfalse
- 2Nozomi Okuharafalse
- 3Carolina Marinfalse
- 4Kento Momotatrue
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Answer : 4. "Kento Momota"
Q: If A and B are the HCF and LCM respectively of two algebraic expressions x and y, and A + B = x + y, then the value of A3 + B3 is
2125 05dca4b85582669277c295f80
5dca4b85582669277c295f80- 1$$x^3-y^3 $$false
- 2$$x^3$$false
- 3$$y^3$$false
- 4$$x^3 + y^3$$true
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Answer : 4. "$$x^3 + y^3$$"
Q: If the difference between the roots of the equation Ax2+BX+C = 0 is 4, then which of the following is TRUE?
2455 05dca4966582669277c295e49
5dca4966582669277c295e49- 1$$B^2 - 16A^2 = 4AC + 4B^2 $$false
- 2$$B^2 - 10A^2 = 4AC + 6A^2$$true
- 3$$B^2 - 8A^2 = 4AC + 10A^2 $$false
- 4$$B^2 - 16A^2 = 4A^C + 8B^2$$false
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Answer : 2. "$$B^2 - 10A^2 = 4AC + 6A^2$$"
Q: If one root of the equation Ax2+Bx+C = 0 is two and a half times the others, then which of the following is TRUE?
1681 05dca48a8582669277c295def
5dca48a8582669277c295def- 1$$7B^2= 3 CA $$false
- 2$$7B^2 = 4 CA$$false
- 3$$7B^2 = 36 CA $$false
- 4$$10B^2 = 49 CA $$true
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Answer : 4. "$$10B^2 = 49 CA $$"
Q: If α and β are the roots of equation x2 - 2x + 4 - 0, then what is the equation whose roots are α3/β2 and β3/α2?
2727 05dca46ef88990a4b0e8010a2
5dca46ef88990a4b0e8010a2- 1$$x^2 - 4x + 8 = 0 $$false
- 2$$x^2 - 32x + 4 = 0 $$false
- 3$$x^2 - 2x + 4 = 0 $$true
- 4$$x^2 - 16x + 4 = 0 $$false
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Answer : 3. "$$x^2 - 2x + 4 = 0 $$"
Q: How many triangles are there in the given figure?
2378 05dca70f545ad6b59c82a743f
5dca70f545ad6b59c82a743f- 120true
- 223false
- 324false
- 426false
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Answer : 1. "20"
Q: The weights of 4 boxes are 30, 40, 50 and 80 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?
4422 05dca706685d84c59cfb9240f
5dca706685d84c59cfb9240f- 1120false
- 2110false
- 3100true
- 4130false
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