Quiz Discussion

David gets on the elevator at the 11th floor of a building and rides up at the rate of 57 floors per minute. At the same time, Albert gets on an elevator at the 51st floor of the same building and rides down at the rate of 63 floors per minute. If they continue travelling at these rates, then at which floor will their paths cross ?

Course Name: Quantitative Aptitude

  • 1] 19th floor
  • 2] 28th floor
  • 3] 30th floor
  • 4] 37th floor
Solution
No Solution Present Yet

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# Quiz
1
Discuss

If \(\left( {x - \frac{1}{x}} \right){ \text{ = }}\sqrt {21} { \text{,}} \)    then the value of \(\left( {{x^2} + \frac{1}{{{x^2}}}} \right) \left( {x + \frac{1}{x}} \right)\) is = ?

 

  • 1] 42
  • 2] 63
  • 3] 115
  • 4] 120
  • 5] 125
Solution
2
Discuss

The value of \(\frac{{{x^2} - {{\left( {y - z} \right)}^2}}}{{{{\left( {x + z} \right)}^2} - {y^2}}}{ \text{ + }}\frac{{{y^2} - {{\left( {x - z} \right)}^2}}}{{{{\left( {x + y} \right)}^2} - {z^2}}} +\frac{{{z^2} - {{\left( {x - y} \right)}^2}}}{{{{\left( {y + z} \right)}^2} - {x^2}}}\)   is = ?

 

  • 1] -1
  • 2] 0
  • 3] 1
  • 4] None of these
Solution
3
Discuss

The value of x in the equation  = 5     is?

 

  • 1] 21
  • 2] 27
  • 3] 35
  • 4] 42
Solution
4
Discuss

Assume that \(\sqrt {13} \) = 3.605(approximately) and \(\sqrt {130}\)  = 11.40(approximately) Find the value of: \(\sqrt {1.3}\) + \(\sqrt {1300}\)  + \(\sqrt {0.013}\)

 

  • 1] 36.164
  • 2] 36.304
  • 3] 37.304
  • 4] 37.164
Solution
5
Discuss

A teacher wants to arrange his students in an equal number of rows and columns. If there are 1369 students, the number of students in the last row are ?

  • 1] 37
  • 2] 33
  • 3] 63
  • 4] 47
Solution
6
Discuss

If \(\sqrt {{ \text{4096}}}\) = 64, then the value of \(\sqrt {{ \text{40}}{ \text{.96}}}\)   + \(\sqrt {{ \text{0}}{ \text{.4096}}}\)   + \(\sqrt {{ \text{0}}{ \text{.004096}}}\)   + \(\sqrt {{ \text{0}}{ \text{.00004096}}}\)     up to two place of decimals is = ?

 

  • 1] 7.09
  • 2] 7.10
  • 3] 7.11
  • 4] 7.12
Solution
7
Discuss

64^12 / 4^15 = 64^x

  • 1]

    6

  • 2]

    5

  • 3]

    4

  • 4]

    7

Solution
8
Discuss

If a*b= ab/a+b, find the value of 3*(3*-1)

  • 1]

    -1

  • 2]

    1

  • 3]

    3

  • 4]

    -3

Solution
9
Discuss

Eight people are planning to share equally the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire cost of the car, then the share of each of the remaining persons increased by:

  • 1]

    1/7

  • 2]

    1/8

  • 3]

    1/9

  • 4]

    7/8

  • 5]

    None of these

Solution
10
Discuss

\(\frac{3}{2} \times \frac{{11}}{5} \div \left( {\frac{{25}}{{44}} \times \frac{{11}}{5}} \right) \div \frac{{33}}{{15}} = ?\)

 

  • 1]

    1/2

  • 2]

    2/3

  • 3]

    126/125

  • 4]

    \(5\frac{{101}}{{125}}\)

  • 5]

    None of these

Solution
# Quiz