Maths Practice Question and Answer

Q:

If p = 8.15, q = 9.06 and r = −17.21, then the value of p3+q3+r3-3pqr

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  • 1
    -5.62
    Correct
    Wrong
  • 2
    4.75
    Correct
    Wrong
  • 3
    -3.81
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 4. "0 "

Q:

If a=25, b=15 , c=-10 then find the value of $$ {a^{3}+b^{3}+c^{3}-3abc\over {(a-b)^{2}+(b-c)^{2} +(c-a)^{2}}}$$

1089 0

  • 1
    30
    Correct
    Wrong
  • 2
    -15
    Correct
    Wrong
  • 3
    -30
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 4. "15"

Q:

A can do a piece of work in 18 days and B in 36 days. If they work together for 9 days, then what percentage of work will be left?

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  • 1
    33.3
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    25
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
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Answer : 3. "25"

Q:

The cost of school bags and shoes are in the ratio 7 : 5. The cost of a school bag is ₹ 200 more than that of a shoe. So what is the price of the shoes?

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  • 1
    ₹200
    Correct
    Wrong
  • 2
    ₹700
    Correct
    Wrong
  • 3
    ₹500
    Correct
    Wrong
  • 4
    ₹1200
    Correct
    Wrong
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Answer : 3. "₹500"

Q:

Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?

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  • 1
    28 years
    Correct
    Wrong
  • 2
    15 years
    Correct
    Wrong
  • 3
    31 years
    Correct
    Wrong
  • 4
    16 years
    Correct
    Wrong
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Answer : 2. "15 years"

Q:

The ratio of present ages of P and Q is 3:4. The ratio of their ages 27 years hence would be 6:7. If P is 9 years younger than Q then, what would be the present age of Q?

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  • 1
    36 years
    Correct
    Wrong
  • 2
    45 years
    Correct
    Wrong
  • 3
    54 years
    Correct
    Wrong
  • 4
    30 years
    Correct
    Wrong
  • 5
    41 years
    Correct
    Wrong
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Answer : 1. "36 years"

Q:

If $${b\over a}=0.7$$ find the value of $${a-b\over a+b}={11\over34}.$$

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  • 1
    0.2
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    0.5
    Correct
    Wrong
  • 4
    0.3
    Correct
    Wrong
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Answer : 3. "0.5"

Q:

A man travel from A to B at 20 km/Hr. and come back from B to A at 30 km/hr. Find the average speed of the whole journey.

1088 0

  • 1
    23
    Correct
    Wrong
  • 2
    21
    Correct
    Wrong
  • 3
    24
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
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Answer : 3. "24"

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