Aptitude Practice Question and Answer

Q:

यदि a=7, b = 5 and c = 3 है तो $$a^2+b^2+c^2-ab-bc-ca$$ का मान क्या होगा ?

743 0

  • 1
    0
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    12
    Correct
    Wrong
  • 4
    -12
    Correct
    Wrong
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Answer : 3. "12 "

Q:

दो संख्याएं x और y (x>y) इस प्रकार है की उनका योग उनके अंतर का तीन गुना है, तो $$3xy\over 2(x^2-y^2$$ का मान ज्ञात करें।  

748 0

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

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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