Maths Practice Question and Answer

Q:

A, B and C invested capital in the ratio 5: 7: 4, the timing of their investments being in the ratio x : y : z. If their profits are distributed in the ratio 45: 42: 28, then x : y : z = ?

760 0

  • 1
    9 : 6 : 7
    Correct
    Wrong
  • 2
    7 : 9 : 4
    Correct
    Wrong
  • 3
    9 : 4 : 7
    Correct
    Wrong
  • 4
    6 : 7 : 9
    Correct
    Wrong
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Answer : 1. "9 : 6 : 7"

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Answer : 2. "1951 "

Q:

If interest be compounded half-yearly, then find the compound interest on ₹8,000 at the rate of 20% per annum for 1 year. 

760 0

  • 1
    ₹1,675
    Correct
    Wrong
  • 2
    ₹1,690
    Correct
    Wrong
  • 3
    ₹1,685
    Correct
    Wrong
  • 4
    ₹1,680
    Correct
    Wrong
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Answer : 4. "₹1,680"

Q:

If a + b + c = 2, a² + b² + c² = 26 then the value of a³ + b³ + c³ – 3abc is

759 0

  • 1
    71
    Correct
    Wrong
  • 2
    74
    Correct
    Wrong
  • 3
    69
    Correct
    Wrong
  • 4
    78
    Correct
    Wrong
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Answer : 2. "74"

Q:

Directions: Find the wrong number in the following number series:

251, 252, 254, 227, 243, 118, 154

759 0

  • 1
    251
    Correct
    Wrong
  • 2
    252
    Correct
    Wrong
  • 3
    227
    Correct
    Wrong
  • 4
    243
    Correct
    Wrong
  • 5
    154
    Correct
    Wrong
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Answer : 2. "252"

Q:

The average of x occurring 5 times and y occurring 7 times is 37. Also, the average of x occurring 7 times and y occurring 5 times is 35. The value of y is:

759 0

  • 1
    45
    Correct
    Wrong
  • 2
    42
    Correct
    Wrong
  • 3
    30
    Correct
    Wrong
  • 4
    27
    Correct
    Wrong
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Answer : 2. "42"

Q:

What is the volume of the largest sphere that can be carved out of a wooden cube of side 21 cm?$$( π{22\over 7})$$

759 0

  • 1

    3851 cm3 

    Correct
    Wrong
  • 2

    6858 cm

    Correct
    Wrong
  • 3

    4851 cm

    Correct
    Wrong
  • 4

    5821 cm3

    Correct
    Wrong
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Answer : 3. "

4851 cm

"

Q:

The LCM of two numbers is 48. If those numbers are in the ratio 2 : 3 then what will be their sum?

758 0

  • 1
    28
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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Answer : 3. "40"

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