Maths Practice Question and Answer

Q:

The value of $$3{2\over7}+14{4\over9}+5{3\over9}$$ is:

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  • 1
    $$21{4\over63}$$
    Correct
    Wrong
  • 2
    $$25{4\over63}$$
    Correct
    Wrong
  • 3
    $$23{4\over63}$$
    Correct
    Wrong
  • 4
    $$22{4\over63}$$
    Correct
    Wrong
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Answer : 4. "$$22{4\over63}$$"

Q:

The graphs of the linear equations 3x-2y=8 and 4x+3y=5 interest at the point P(α, β). What is the value of (2 α - β)?

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  • 1
    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 4. "5"

Q:

The mean of 9 observations is 16. One more observation is included and the new mean becomes 17. The 10th observation is

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  • 1
    9
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 3. "26 "

Q:

 If $${1\over 4.263}=0.2346$$, find the value of $${1\over0.0004263}.$$

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  • 1
    2346
    Correct
    Wrong
  • 2
    4.263
    Correct
    Wrong
  • 3
    2.346
    Correct
    Wrong
  • 4
    4263
    Correct
    Wrong
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Answer : 1. "2346"

Q:

A cylindrical roller made of iron is 1.2 m long. Its internal radius is 24 cm and thickness of the iron sheet used in making the roller is 15 cm. What is the mass (in kg) of the roller, if 1 cm3 of iron has 8 g mass?

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  • 1
    846.72 π
    Correct
    Wrong
  • 2
    845.75 π
    Correct
    Wrong
  • 3
    892.8 π
    Correct
    Wrong
  • 4
    907.2 π
    Correct
    Wrong
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Answer : 4. "907.2 π"

Q:

One number x is thrice the other number y. If the sum of both the numbers is 20, then what is the values of x and y are respectively ?

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  • 1
    8 and 12
    Correct
    Wrong
  • 2
    5 and 15
    Correct
    Wrong
  • 3
    15 and 5
    Correct
    Wrong
  • 4
    2 and 18
    Correct
    Wrong
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Answer : 3. "15 and 5"

Q:

If (m + 1) = √n + 3, the value of   $${1\over 2}\left({m^3-6m^2+12m-8\over \sqrt { n}}-n \right)  \ $$ is

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

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