Maths Practice Question and Answer

Q:

A person lends 40% of his sum of money at 15% per annum, 50% of the rest at 10% per annum and the rest at 18% per annum rate of interest. What would be the annual rate of interest, if the interest is calculated on the whole sum?

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  • 1
    13.4%
    Correct
    Wrong
  • 2
    14.33%
    Correct
    Wrong
  • 3
    14.4%
    Correct
    Wrong
  • 4
    13.33%
    Correct
    Wrong
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Answer : 3. "14.4% "
Explanation :

Q:

In an alloy, zinc and copper are in the ratio 1 : 2. In the second alloy the same elements are in the ratio 2 : 3. In what ratio should these two alloys be mixed to form a new alloy in which the two elements are in ratio 5 : 8?

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  • 1
    7 : 11
    Correct
    Wrong
  • 2
    3:10
    Correct
    Wrong
  • 3
    5 : 11
    Correct
    Wrong
  • 4
    9:11
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 2. "3:10"

Q:

A pole 23 m long reaches a window which is 3 m above the ground on one side of a street. Keeping its foot at the same point, the pole is turned to the other side of the street to reach a window 4 is m high. What is the width (in m) of the street? 

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  • 1
    17
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    39
    Correct
    Wrong
  • 4
    22
    Correct
    Wrong
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Answer : 3. "39 "

Q:

What is the ASA congruence rule of triangles, where A and S represents angle and side of triangle respectively?

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  • 1
    Two triangles are said to be congruent if any pair of 2 angles and any 1 pair of sides of both the triangles are equal.
    Correct
    Wrong
  • 2
    Two triangles are said to be congruent if all three sides of both the triangles are equal.
    Correct
    Wrong
  • 3
    Two triangles are said to be congruent if 2 angles and the included side of one triangle are equal to 2 angles and the included side of the other triangle
    Correct
    Wrong
  • 4
    Two triangles are said to be congruent if 2 sides and the included angle of one triangle are equal to 2 sides and the included angle of the other triangle.
    Correct
    Wrong
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Answer : 3. "Two triangles are said to be congruent if 2 angles and the included side of one triangle are equal to 2 angles and the included side of the other triangle"

Q:

Directions: The following Pie Chart shows the export of different food grains from India in 2010. Study the chart and answer the questions:


If the revenue from 1 quintal of crop A is thrice that from 1 quintal of crop C, then the ratio of the total revenues of A and C is

1051 0

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

Q:

$$x+{1\over x}=2$$ and x is real, then the value of $$x^{17}+{1\over x^{19}}$$ is

1051 0

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

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