Aptitude Practice Question and Answer

Q:

एक पाइप एक टैंक को x घंटे में भर सकता है और दूसरा इसे y घंटे में खाली कर सकता है। वे एक साथ इसे कितने घंटे में भरेंगे? यदि y>x?

690 0

  • 1
    $$ {xy\over y-x}{hrs}$$
    Correct
    Wrong
  • 2
    $$ {y-x\over xy}{hrs}$$
    Correct
    Wrong
  • 3
    $$ {2yx\over y-x}{\ hs}$$
    Correct
    Wrong
  • 4
    Can’t be determined
    Correct
    Wrong
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Answer : 1. "$$ {xy\over y-x}{hrs}$$"

Q:

यदि किसी डाटा में से 32 को हटा दें: 20, 25, 28, 32, 38, 45, 48, 52, तब माध्यिका में कितने की वृद्धि होगी?

690 0

  • 1
    1
    Correct
    Wrong
  • 2
    1.5
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 4. "3 "

Q:

किसी शंकु की त्रिज्या 20 सेमी तथा ऊंचाई 21 सेमी है, शंकु का कुल पृष्ठ क्षेत्रफल वर्ग सेमी में है:

689 0

  • 1
    3080
    Correct
    Wrong
  • 2
    3160
    Correct
    Wrong
  • 3
    2920
    Correct
    Wrong
  • 4
    3240
    Correct
    Wrong
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Answer : 1. "3080"
Explanation :



$$ {πr^2+πrl}$$

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Answer : 3. "24"

Q:

$$ {x^{8}+4\over{x^{4}+2x^{2}+2}}$$ बराबर है—

687 0

  • 1
    $$ {x^{4}+2x^{2}-2}$$
    Correct
    Wrong
  • 2
    $$ {x^{4}-2x^{2}+2}$$
    Correct
    Wrong
  • 3
    $$ {x^{4}-2x^{2}-2}$$
    Correct
    Wrong
  • 4
    Can’t be simplified
    Correct
    Wrong
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Answer : 2. "$$ {x^{4}-2x^{2}+2}$$"

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