Maths Practice Question and Answer

Q:

यदि $${5x-{5\over x}+6=0}$$, तो $$x^2+{1\over x^2}$$ है

992 0

  • 1
    $$86\over11$$
    Correct
    Wrong
  • 2
    $$43\over12$$
    Correct
    Wrong
  • 3
    $$86\over25$$
    Correct
    Wrong
  • 4
    $$81\over10$$
    Correct
    Wrong
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Answer : 3. "$$86\over25$$"

Q:

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

992 0

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

Q:

द्विघात बहुपद x2+7x+ 10 के शून्यकों का गुणनफल है

991 0

  • 1
    12
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    42
    Correct
    Wrong
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Answer : 2. "10"

Q:

एक घनाभ का आयतन एक घन के आयतन का 2 गुना है दिवाकी विमायें 9 से.मी 8 से.मी और 6 से.मी हो तो घन का संपूर्ण पृष्ठ क्षेत्रफल ?

989 0

  • 1
    32 वर्ग सेमी
    Correct
    Wrong
  • 2
    216 वर्ग सेमी
    Correct
    Wrong
  • 3
    435 वर्ग सेमी
    Correct
    Wrong
  • 4
    108 वर्ग सेमी
    Correct
    Wrong
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Answer : 2. "216 वर्ग सेमी "

Q:

(x + y + z)3 – (y + z – x)3 – (z + x – y)3 – (x + y – z)3 का मान है:

989 0

  • 1
    12 xyz
    Correct
    Wrong
  • 2
    24 xyz
    Correct
    Wrong
  • 3
    36 xyz
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 2. "24 xyz "

Q:

दो समबाहु त्रिभुजों का क्षेत्रफल 25 : 36 के अनुपात में है। उनकी ऊँचाई का अनुपात होगा :

989 0

  • 1
    36 : 25
    Correct
    Wrong
  • 2
    25 : 36
    Correct
    Wrong
  • 3
    5 : 6
    Correct
    Wrong
  • 4
    √5 : √6
    Correct
    Wrong
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Answer : 3. "5 : 6"

Q:

संख्या 15!/100 में इकाई के स्थान पर कौनसा अंक होगा ?

988 0

  • 1
    5
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 4. "0"

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