Algebra Question with answer Practice Question and Answer

Q:

यदि $${3-5x\over 2x}+{3-5y\over 2y}+{3-5z\over 2z}=0$$ है, तो $${2\over x}+{2\over y}+{2\over z}$$ का मान ज्ञात करें।

1221 0

  • 1
    20
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "10"

Q:

यदि $$ \ {xy\over x+y}= a, $$ $${xz\over x+z}=b $$ and $$ {yz\over y+z} =c $$ है, जहाँ a, b, c सभी अशून्य संख्याऐ है, तो x का मान किसके बराबर है ?

1465 0

  • 1
    $$ 2abc\over {ab+bc-ac} $$
    Correct
    Wrong
  • 2
    $$ 2abc\over {ab+ac-ac} $$
    Correct
    Wrong
  • 3
    $$ 2abc\over {ac+bc-ab} $$
    Correct
    Wrong
  • 4
    $$ 2abc\over {ac+bc-ac} $$
    Correct
    Wrong
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Answer : 3. "$$ 2abc\over {ac+bc-ab} $$"

Q:


951 0

  • 1
    -1
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    41
    Correct
    Wrong
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Answer : 2. "1"

Q:

यदि  a=x+y, b=x-y, c=x+2y है तो $$ {a^2+b^2+c^2}-ab-bc-ca $$ का मान है

1364 0

  • 1
    $${4y^2}$$
    Correct
    Wrong
  • 2
    $${5y^2}$$
    Correct
    Wrong
  • 3
    $${6y^2}$$
    Correct
    Wrong
  • 4
    $${7y^2}$$
    Correct
    Wrong
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Answer : 4. "$${7y^2}$$"

Q:

यदि दो संख्या x और $$1\over x$$ (जहाँ x ≠ 0) का औसत A है तो x3 और $$1\over {x^3}$$ तो का औसत क्या होगा ?

934 0

  • 1
    $$4A^3-2A$$
    Correct
    Wrong
  • 2
    $$4A^3-3A$$
    Correct
    Wrong
  • 3
    $$4A^3-4A$$
    Correct
    Wrong
  • 4
    $$4A^2-2A$$
    Correct
    Wrong
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Answer : 2. "$$4A^3-3A$$ "

Q:

निम्न समीकरण हो हल कीजिए

1011 0

  • 1
    4
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    10
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 3. "10"

Q:

यदि $${x}^2+{y}^2x+1=0$$ है, तो $$x^{31}+y{35}$$ का मान क्या होगा?

1141 0

  • 1
    – 1
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 1. "– 1 "

Q:

यदि x2+y2+z2 = xy + yz + zx,  है, तो $${3x^4+7y^4+5z^4}\over{5x^2y^2+7y^2z^2+3z^2x^2} $$ का मान ज्ञात करें।

1456 0

  • 1
    2
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    -1
    Correct
    Wrong
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Answer : 2. "1"

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