Algebra Practice Question and Answer

Q:

यदि दो वास्तविक अचरो a और b की लिए व्यंजक ax3+3x2-8x+b, (x+2) और (x-2) से पूर्णत: विभाजित है, तो

1633 0

  • 1
    a = 2, b = -12
    Correct
    Wrong
  • 2
    a = -2, b = 12
    Correct
    Wrong
  • 3
    a = 2, b = 12
    Correct
    Wrong
  • 4
    a = 12, b = 12
    Correct
    Wrong
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Answer : 1. "a = 2, b = -12"

Q:

यदि $$ {x+{1\over {x}}=1}$$,  है तो $$ {x^{208}+{x^{205}+x^{204}+x^{201}}}$$ का मान क्या होगा?

1631 1

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

Q:

यदि a3b = abc = 180, है और a, b, c धनात्मक पूर्णांक है तो c का मान ज्ञात करे।

1629 0

  • 1
    4
    Correct
    Wrong
  • 2
    25
    Correct
    Wrong
  • 3
    110
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 4. "1"

Q:

यदि bc+ab+ca=abc है तो $$ {b+c\over {bc(a-1)}}+{a-c\over {ac(b-1)}}+{a+b\over {ab(c-1)}}$$ का मान होगा

1577 0

  • 1
    2
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    $$ {-1\over {2}}$$
    Correct
    Wrong
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Answer : 2. "1"

Q:

यदि (a-b)2 + (b-c)2 + (c-a)2 = 0, (a3+b3+c3-3abc) तो  का मान ज्ञात कीजिये ?

1566 0

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

Q:

यदि a-b=10 , ab=-21,  है तो a3-bका मान होगा।

1565 0

  • 1
    316
    Correct
    Wrong
  • 2
    370
    Correct
    Wrong
  • 3
    185
    Correct
    Wrong
  • 4
    158
    Correct
    Wrong
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Answer : 2. "370"

Q:

निम्न समीकरण हो हल कीजिए

1565 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 $${a\over b}={2\over3}$$ और $${b\over c}={4\over5}$$  है, तो $${a+b}\over {b+c}$$ का अनुपात किसके बराबर होगा ?

1558 0

  • 1
    $${20\over27} $$
    Correct
    Wrong
  • 2
    $${27\over20} $$
    Correct
    Wrong
  • 3
    $${6\over8} $$
    Correct
    Wrong
  • 4
    $${8\over6} $$
    Correct
    Wrong
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Answer : 1. " $${20\over27} $$"

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