Maths Practice Question and Answer

Q:

यदि (2x)(2y) = 8 और (9x)(3y) = 81, तो (x , y) का मान क्या होगा -

2002 0

  • 1
    ( 1, 1 )
    Correct
    Wrong
  • 2
    ( 2, 2 )
    Correct
    Wrong
  • 3
    ( 1, 2 )
    Correct
    Wrong
  • 4
    ( 2, 1 )
    Correct
    Wrong
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Answer : 3. "( 1, 2 ) "

Q:

निर्देश: निम्नलिखित प्रश्न में प्रश्न (?) के स्थान पर क्या आना चाहिए?

(?)2 + (65)2=(160)2 -  (90)2 – 7191

2001 0

  • 1
    75
    Correct
    Wrong
  • 2
    77
    Correct
    Wrong
  • 3
    79
    Correct
    Wrong
  • 4
    81
    Correct
    Wrong
  • 5
    इनमें से कोई नहीं
    Correct
    Wrong
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Answer : 5. "इनमें से कोई नहीं"

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Answer : 2. "Rs. 160"
Explanation :

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Q:

यदि ( 2x – y): ( 5x+3y)=3 : 8 है तो ( x2 + y2) : ( x2 – y2) का मान होगा।

2000 0

  • 1
    257 : 255
    Correct
    Wrong
  • 2
    145 : 144
    Correct
    Wrong
  • 3
    144 : 143
    Correct
    Wrong
  • 4
    133 : 122
    Correct
    Wrong
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Answer : 2. "145 : 144"

Q:

समीकरण $$2x^2-7x+ 12=0 $$  के दो मूल α व β है, तो $$ {α \over β }   + {β \over α }=? $$

2000 1

  • 1
    24
    Correct
    Wrong
  • 2
    $$ {1 \over 24 }$$
    Correct
    Wrong
  • 3
    12
    Correct
    Wrong
  • 4
    $$ {1 \over 12 }$$
    Correct
    Wrong
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Answer : 2. "$$ {1 \over 24 }$$"

Q:

यदि a : b = 7 : 9  और b : c = 5 : 7,  तो a : c क्या होगा ?

1999 0

  • 1
    5 : 9
    Correct
    Wrong
  • 2
    3 : 5
    Correct
    Wrong
  • 3
    7 : 21
    Correct
    Wrong
  • 4
    7 : 15
    Correct
    Wrong
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Answer : 1. "5 : 9"

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