Maths Practice Question and Answer

Q:

The value of $$ \sqrt { 2^4} \ + \ ^{3}\sqrt {64} \  + \ ^4\sqrt { 2^8} \    $$ is :

2062 0

  • 1
    12
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    18
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 1. "12"

Q:

Four pipes P, Q, R and S can fill a cistern in 25, 20, 50 and 40 hours respectively. The pipe Q was opened at 7 pm, P at 9 pm, S at 10 pm and R at 11 pm. When will the cistern be full?

2061 0

  • 1
    3 : 29 AM
    Correct
    Wrong
  • 2
    2 : 47 AM
    Correct
    Wrong
  • 3
    4 : 09 AM
    Correct
    Wrong
  • 4
    5 : 02 AM
    Correct
    Wrong
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Answer : 3. "4 : 09 AM"

Q:

Sumitra has an average of 56% on her first 7 examinations. How much should she make on her eighth examination to obtain an average of 60% on 8 examinations?

2060 1

  • 1
    88%
    Correct
    Wrong
  • 2
    78%
    Correct
    Wrong
  • 3
    98%
    Correct
    Wrong
  • 4
    Cannot be determined
    Correct
    Wrong
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Answer : 4. "Cannot be determined"

Q:

If a shopkeeper bought 70 kg of potatoes for Rs 420 and sold the entire purchase at the rate of 6.50 per kg, what was his profit percentage?

2059 0

  • 1
    $$ {8{1\over 3}\%}$$
    Correct
    Wrong
  • 2
    $$ {5{1\over 3}\%}$$
    Correct
    Wrong
  • 3
    $$ {8{2\over 3}\%}$$
    Correct
    Wrong
  • 4
    $$ {4{1\over 3}\%}$$
    Correct
    Wrong
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Answer : 1. "$$ {8{1\over 3}\%}$$"

Q:

What is the total surface area and curved surface area of a solid semi circle with radius of 14 cm?

2059 0

  • 1
    $$ {5544cm^2},1848 cm^2 $$
    Correct
    Wrong
  • 2
    $$ {1848cm^2},1232 cm^2 $$
    Correct
    Wrong
  • 3
    $$ {924cm^2},616 cm^2 $$
    Correct
    Wrong
  • 4
    $$ {2772cm^2},1848 cm^2 $$
    Correct
    Wrong
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Answer : 2. "$$ {1848cm^2},1232 cm^2 $$"

Q:

Greatest among the numbers
$$^{3}\sqrt{9},\sqrt{3},\ ^{4}\sqrt{16},\ ^{6}\sqrt{180}$$ is

2058 0

  • 1
    $$^{3}\sqrt{9}$$
    Correct
    Wrong
  • 2
    $$\sqrt{3}$$
    Correct
    Wrong
  • 3
    $$^{4}\sqrt{16}$$
    Correct
    Wrong
  • 4
    $$^{6}\sqrt{180}$$
    Correct
    Wrong
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Answer : 1. "$$^{3}\sqrt{9}$$"
Explanation :

undefined

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Answer : 2. "25:1"

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