Algebra Question with answer Practice Question and Answer

Q:

दी गई प्रतिक्रियाओं में से, (a2 – b2 )3 + (b2 – c2) 3 + (c2 – a2) 3 का एक कारक है

1139 0

  • 1
    (a + b) (a – b)
    Correct
    Wrong
  • 2
    (a + b) (a + b)
    Correct
    Wrong
  • 3
    (a – b) (a – b)
    Correct
    Wrong
  • 4
    (b – c) (b – c)
    Correct
    Wrong
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Answer : 1. "(a + b) (a – b) "

Q:

यदि x+y =3 तथा $${1\over x}+{1\over y}= -{3\over 10}$$  है, तो (x2+y2)  का मान क्या है?

1138 0

  • 1
    29
    Correct
    Wrong
  • 2
    28
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    34
    Correct
    Wrong
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Answer : 1. "29"

Q:

यदि x+y+z=10, x2+y2+z2=30, है, तो x3+y3+z3-3xyz  का मान ______ है।

1133 0

  • 1
    −10
    Correct
    Wrong
  • 2
    −70
    Correct
    Wrong
  • 3
    −50
    Correct
    Wrong
  • 4
    −30
    Correct
    Wrong
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Answer : 3. "−50"

Q:

यदि x + y + 3 = 0 , तो x3+y3-9xy+9 का मान ज्ञात कीजिए।

1125 0

  • 1
    18
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    -36
    Correct
    Wrong
  • 4
    -18
    Correct
    Wrong
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Answer : 4. "-18 "

Q:

यदि a = 34, b = c = 33, तो a3 + b3 + c3 – 3abc का मान है

1124 0

  • 1
    0
    Correct
    Wrong
  • 2
    111
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    100
    Correct
    Wrong
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Answer : 4. "100"

Q:

यदि (x + y)3 +8 (x - y)3 = (3x+ Ay)(3x2+ Bxy+ Cy2), तो A+B+C का मान है:

1116 0

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

Q:

यदि 9x2 + y2 = 37 और xy = 2, x, y>0, तो (27x3+ y3) का मान है:

1116 0

  • 1
    301
    Correct
    Wrong
  • 2
    217
    Correct
    Wrong
  • 3
    207
    Correct
    Wrong
  • 4
    259
    Correct
    Wrong
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Answer : 2. "217"

Q:

यदि a ≠ b है, तो निम्न मे से कोनसा कथन सत्य है ?

1115 0

  • 1
    $${a+b\over 2}= \sqrt{ab} $$
    Correct
    Wrong
  • 2
    $${a+b\over 2}> \sqrt{ab} $$
    Correct
    Wrong
  • 3
    $${a+b\over 2}< \sqrt{ab} $$
    Correct
    Wrong
  • 4
    उपरोक्त सभी
    Correct
    Wrong
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Answer : 2. "$${a+b\over 2}> \sqrt{ab} $$"

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