Maths Practice Question and Answer

Q:

Three of the following four words are alike in a certain way and one is different. Pick the odd word out.

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  • 1
    Radium
    Correct
    Wrong
  • 2
    Sodium
    Correct
    Wrong
  • 3
    Thorium
    Correct
    Wrong
  • 4
    Uranium
    Correct
    Wrong
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Answer : 2. "Sodium "

Q:

A is twice fast as B and B is thrice as fast as C. The journey covered by C in 78 minutes then time taken by A to cover the same journey is-

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  • 1
    15
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    18
    Correct
    Wrong
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Answer : 3. "13 "

Q:

Let ΔABC ∼ Δ PQR and ar(∆ABC)/ar(∆PQR) =4/25. If AB = 12 cm, BC = 8 cm and AC = 9 cm, then QR is equal to:

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  • 1
    20
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    17.5
    Correct
    Wrong
  • 4
    18
    Correct
    Wrong
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Answer : 1. "20"

Q:

What is the perimeter of a square inscribed in a circle of radius 5 cm?

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  • 1
    $$20\sqrt { 2} \ cm$$
    Correct
    Wrong
  • 2
    $$40\sqrt { 2} \ cm$$
    Correct
    Wrong
  • 3
    $$30\sqrt { 2} \ cm$$
    Correct
    Wrong
  • 4
    $$10\sqrt { 2} \ cm$$
    Correct
    Wrong
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Answer : 1. "$$20\sqrt { 2} \ cm$$"

Q:

What is the area ( in cm2 ) of the circumcircle of a triangle whose sides are 6 cm , 8 cm and 10 cm respectively ? 

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  • 1
    $$ {275\over 7}$$
    Correct
    Wrong
  • 2
    $$ {2200\over 7}$$
    Correct
    Wrong
  • 3
    $$ {550\over 7}$$
    Correct
    Wrong
  • 4
    $$ {1100\over 7}$$
    Correct
    Wrong
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Answer : 3. "$$ {550\over 7}$$"

Q:

 If $$ {x\over y}={y\over w}$$ then what is the value of (xy+zw).

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  • 1
    $$ {(x^{2}+z^{2})(y^{2}+w^{2})}$$
    Correct
    Wrong
  • 2
    $${(x^{2}{y^{2}+z^{2}w^{2}})}$$
    Correct
    Wrong
  • 3
    $${(x^{2}{w^{2}+y^{2}z^{2}})}$$
    Correct
    Wrong
  • 4
    $$ {(x^{2}+w^{2})(y^{2}+z^{2})}$$
    Correct
    Wrong
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Answer : 1. "$$ {(x^{2}+z^{2})(y^{2}+w^{2})}$$"

Q:

If Arun purchases 11 articles for Rs.10 and sold all the articles at the rate of 10 for Rs.11, the profit percentage will be.

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  • 1
    21%
    Correct
    Wrong
  • 2
    100%
    Correct
    Wrong
  • 3
    10%
    Correct
    Wrong
  • 4
    11%
    Correct
    Wrong
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Answer : 1. "21% "

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