Maths Practice Question and Answer

Q:

Solve the following equation.

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  • 1
    4
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    10
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 3. "10"

Q:

The average weight of three men is increased by 4 kg when one of them, whose weight is 100 kg, is replaced by another man. What is the weight of the new man? 

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  • 1
    107 kg
    Correct
    Wrong
  • 2
    103 kg
    Correct
    Wrong
  • 3
    104 kg
    Correct
    Wrong
  • 4
    112 kg
    Correct
    Wrong
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Answer : 4. "112 kg"

Q:

If (a-b)2 + (b-c)2 + (c-a)2 = 0, then find the value of (a3+b3+c3-3abc) ?

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

Q:

Directions: Study the following table carefully to answer the questions that follow .
Number of soldiers ( in thousands ) joining five different forces during six different.

What was the ratio of the number of soldiers joining Army in the year 2008 to the number of soldiers joining Army in the year 2006? 

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  • 1
    5:2
    Correct
    Wrong
  • 2
    3:7
    Correct
    Wrong
  • 3
    4:3
    Correct
    Wrong
  • 4
    5:1
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 2. "3:7 "

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Answer : 4. "1:1"

Q:

A root of equation $$({ax}^2+bx+c)$$ (where a, b and c are rational numbers) is 5 +3√3. What is the value of $$({a}^2+b^2+c^2) / (a+b+c) ? $$

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  • 1
    35/3
    Correct
    Wrong
  • 2
    37/3
    Correct
    Wrong
  • 3
    -105/11
    Correct
    Wrong
  • 4
    -105/13
    Correct
    Wrong
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Answer : 3. "-105/11"

Q:

The shadow of a tower standing on a level plane is found to be 30 metre longer when the Sun's altitude changes from 60 ° to 45 °. The height of the tower is 

1715 0

  • 1
    15 (√3-1) m
    Correct
    Wrong
  • 2
    15 (3-√3) m
    Correct
    Wrong
  • 3
    15 (3+√3) m
    Correct
    Wrong
  • 4
    15 (3-√3) m
    Correct
    Wrong
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Answer : 3. "15 (3+√3) m "

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