Quiz Discussion

If \(\frac{{x + 1}}{{x - 1}}{ \text{ = }}\frac{a}{b}  \)    and \(\frac{{1 - y}}{{1 + y}}{ \text{ = }}\frac{b}{a}{ \text{,}} \) then the value of \(\frac{{x - y}}{{1 + xy}}\)   = ?

 

Course Name: Quantitative Aptitude

  • 1]

    \(\frac{{2ab}}{{{a^2} - {b^2}}}\)

  • 2]

    \(\frac{{{a^2} - {b^2}}}{{2ab}}\)

  • 3]

    \(\frac{{{a^2} + {b^2}}}{{2ab}}\)

  • 4]

    \(\frac{{{a^2} - {b^2}}}{{ab}}\)

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed ?

  • 1] 256
  • 2] 432
  • 3] 512
  • 4] 640
  • 5] None of these
Solution
2
Discuss

What is \(\frac{{\frac{7}{8} \times \frac{7}{8} + \frac{5}{6} \times \frac{5}{6} + \frac{7}{8} \times \frac{5}{3}}}{{\frac{7}{8} \times \frac{7}{8} - \frac{5}{6} \times \frac{5}{6}}}\)     equal to ?

 

  • 1]

    41/24

  • 2]

    1/24

  • 3]

    41

  • 4]

    None of these

Solution
3
Discuss

Direction: In the question given below the given mathematical symbols are changed from '+' to '÷', '-' to '×', '÷' to '-' and from '×' to '+', then choose your answers from the following options.

  • 1] -13
  • 2] -3
  • 3] 4
  • 4] 7
Solution
4
Discuss

If (a+b+2c+3d)(a-b-2c+3d)=(a-b+2c-3d)(a+b-2c-3d), then 2bcis equal to?

  • 1]

    3ad

  • 2]

    3ac

  • 3]

    2ad

  • 4]

    2ab

Solution
5
Discuss

\(\frac{{{{\left( {3\frac{2}{3}} \right)}^2} - {{\left( {2\frac{1}{2}} \right)}^2}}}{{{{\left( {4\frac{3}{4}} \right)}^2} - {{\left( {3\frac{1}{3}} \right)}^2}}}\div\frac{{3\frac{2}{3} - 2\frac{1}{2}}}{{4\frac{3}{4} - 3\frac{1}{3}}}\)   = ?

 

  • 1]

    37/97

  • 2]

    74/97

  • 3]

    \(1\frac{{23}}{{74}}\)

  • 4]

    None of these

Solution
6
Discuss

There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:

  • 1] 20
  • 2] 80
  • 3] 100
  • 4] 200
  • 5] None of these
Solution
7
Discuss

The square root of \(\frac{{0.342 \times 0.684}}{{0.000342 \times 0.000171}} = ?\)

 

  • 1] 250
  • 2] 2500
  • 3] 2000
  • 4] 4000
Solution
8
Discuss

Solve 4376 + 3209 - 1784 + 97 = 3125 + ?

  • 1] 2713
  • 2] 2743
  • 3] 2773
  • 4] 2793
  • 5] 2737
Solution
9
Discuss

5907 – 1296 / 144 = x * 8.0

  • 1]

    700.05

  • 2]

    705.25

  • 3]

    751.54

  • 4]

    737.25

Solution
10
Discuss

A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:

  • 1] 22
  • 2] 23
  • 3] 24
  • 4] 26
Solution
# Quiz