Algebra Question with answer Practice Question and Answer

Q:

यदि a + b + c = 6, a3 + b3+c3-3abc=342, तो ab + bc + ca का मान क्या है?

1073 0

  • 1
    5
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    -7
    Correct
    Wrong
  • 4
    -5
    Correct
    Wrong
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Answer : 3. "-7 "

Q:

यदि $$x+{1\over x}=c{1\over c}$$  तो x का मान बताइए ?

1064 0

  • 1
    c, 1\c
    Correct
    Wrong
  • 2
    c, c2
    Correct
    Wrong
  • 3
    c, 2c
    Correct
    Wrong
  • 4
    0, 1
    Correct
    Wrong
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Answer : 1. "c, 1\c "

Q:

यदि a + b + c = 6, a2 + b2 + c2 = 14 और a3 + b3 + c3 = 36, है, तो abc का मान है

1053 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 2. "6 "

Q:

यदि $${{x^{24}+1}\over x^{12}}=7$$ तो $${{x^{72}+1}\over x^{36}}$$  का मान है

1052 0

  • 1
    433
    Correct
    Wrong
  • 2
    322
    Correct
    Wrong
  • 3
    343
    Correct
    Wrong
  • 4
    432
    Correct
    Wrong
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Answer : 2. "322 "

Q:

यदि $$n+{2\over 3}n+{1\over2}n+{1\over7}n=97$$ है, तो n का मान ज्ञात करे ?

1049 0

  • 1
    44
    Correct
    Wrong
  • 2
    46
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    42
    Correct
    Wrong
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Answer : 4. "42 "

Q:

यदि $$ a={b^2\over b-a} $$ तो a3 + b3 का मान है

1028 0

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

Q:

यदि x = – 1, तो $$ {1\over x^{99}}+{1\over x^{98}}+{1\over x^{97}}+{1\over x का मान ^{96}}+{1\ over x^{95}}+{1\ over x^{94}}+x $$ है

1026 0

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

Q:

यदि $$a+{1\over a}=5$$, तो $$a^3+{1\over a^3}$$ का मान क्या है

1024 0

  • 1
    110
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    105
    Correct
    Wrong
  • 4
    -10
    Correct
    Wrong
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Answer : 1. "110 "

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