Aptitude Practice Question and Answer

Q:

If a=34, b=c=33, then the value of a3+b3+c3-3abc is 

1379 0

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

Q:

If a+b = 1 and a3+b3+3ab=k, then the value of k is : 

1040 0

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

Q:

If $$64^{x+1}={64\over 4^x}$$, then the value of x

731 0

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

Q:

If a, b are rational number and (a-1)√2+3=b√2+a, the value of (a+b) is : 

743 0

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

Q:

if a3b = abc = 180, a, b, c are positive integers, then the value of c is 

1158 0

  • 1
    4
    Correct
    Wrong
  • 2
    25
    Correct
    Wrong
  • 3
    110
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 4. "1"

Q:

If for two real constants a and b the expression ax3+3x2-8x+b is exactly divisible by (x+2) and (x-2), then 

1234 0

  • 1
    a = 2, b = -12
    Correct
    Wrong
  • 2
    a = -2, b = 12
    Correct
    Wrong
  • 3
    a = 2, b = 12
    Correct
    Wrong
  • 4
    a = 12, b = 12
    Correct
    Wrong
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Answer : 1. "a = 2, b = -12"

Q:

If x = b+c -2a, y=c+a-2b, z=a+b-2c, then the value of x2+y2-z2+2xy is : 

958 0

  • 1
    a-b+c
    Correct
    Wrong
  • 2
    a+b-c
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    a+b+c
    Correct
    Wrong
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Answer : 3. "0"

Q:

If x2+y2-4x-4y+8=0, then the value of x-y is: 

878 0

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

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