Maths Practice Question and Answer

Q:

यदि एक लंब वृत्तीय बेलन के आधार की त्रिज्या 20% बढ़ा दी जाए और ऊंचाई 30% कम कर दी जाए, तो आयतन में प्रतिशत वृद्धि/कमी क्या है?

357 0

  • 1
    0.8% की कमी
    Correct
    Wrong
  • 2
    2% बढ़ाएँ
    Correct
    Wrong
  • 3
    0.8% की वृद्धि
    Correct
    Wrong
  • 4
    2% की कमी
    Correct
    Wrong
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Answer : 3. "0.8% की वृद्धि"

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Answer : 4. "5% लाभ"

Q:

यदि $${45\over53}={1\over{a+{1\over b+{1\over c-{2\over 5}}}}}$$  जहाँ a, b और c धनात्मक पूर्णांक हैं, तो (4a-b+3c) का मान क्या है?

373 0

  • 1
    6
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    7
    Correct
    Wrong
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Answer : 3. "5"

Q:

∆ABC में, ∠C=900, बिंदु P और Q क्रमशः AC और BC की भुजाओं पर हैं, इस प्रकार कि AP:PC=BQ:QC=1:2. फिर, $${AQ^2+BP^2}\over AB^2$$ बराबर है:

415 0

  • 1
    $$8\over 3$$
    Correct
    Wrong
  • 2
    $$4\over 3$$
    Correct
    Wrong
  • 3
    $$13\over 9$$
    Correct
    Wrong
  • 4
    $$4\over 9$$
    Correct
    Wrong
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Answer : 3. "$$13\over 9$$"

Q:

यदि sin 3A=cos(A+100),जहाँ 3A एक न्यूनकोण है, तो $$2cosec{3A\over2}+6sin^23A-{3\over 2}tan^2\ 3A$$ का मान क्या है?

312 0

  • 1
    4
    Correct
    Wrong
  • 2
    $$7\over 4$$
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    $$17\over 2$$
    Correct
    Wrong
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Answer : 1. "4"

Q:

$${cosec^230^0sin^245^0+sec^260^0}\over {tan60^0cosec^245^0-sec^260^0tan45^0}$$ का मान है

347 0

  • 1
    $$-2\sqrt { 3}-2$$
    Correct
    Wrong
  • 2
    $$-3(2+\sqrt { 3})$$
    Correct
    Wrong
  • 3
    $$3(2+\sqrt { 3})$$
    Correct
    Wrong
  • 4
    $$2\sqrt { 3}-2$$
    Correct
    Wrong
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Answer : 2. " $$-3(2+\sqrt { 3})$$"

Q:

cosA(sec A – cosA)(cotA+tanA)=?

388 0

  • 1
    tan A
    Correct
    Wrong
  • 2
    cot A
    Correct
    Wrong
  • 3
    sec A
    Correct
    Wrong
  • 4
    sin A
    Correct
    Wrong
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Answer : 1. "tan A"

Q:

$${cosθ+sin^6θ+3sin^2θ \ cos^2θ}\over cosecθsecθ(sinθ+cosθ-1)(sinθ+cosθ+1) $$का मान

355 0

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

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