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

To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present ?

  • 1] 10
  • 2] 35
  • 3] 62.5
  • 4] Cannot be determined
  • 5] None of these
Solution
2
Discuss

In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ?

  • 1] 160
  • 2] 175
  • 3] 180
  • 4] 195
  • 5] None of these
Solution
3
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
4
Discuss

If 547.527/0.0082   then the value of 547527/82   is = ?

 

  • 1]

    10x

  • 2]

    100x

  • 3]

    x/100

  • 4]

    x/10

Solution
5
Discuss

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

  • 1] 2713
  • 2] 2743
  • 3] 2773
  • 4] 2793
  • 5] 2737
Solution
6
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
7
Discuss

3/5 of 4/7 of 5/9 of 21/24 of 504 = ?

  • 1]

    63

  • 2]

    39

  • 3]

    96

  • 4]

    84

Solution
8
Discuss

If 12 + 22 + 32 + . . . . . + p2 = \(\left[ {\frac{{{ \text{p}}\left( {{ \text{p}} + 1} \right)\left( {2{ \text{p}} + 1} \right)}}{6}} \right]{ \text{,}}\)     then 12 + 32 + 52 + . . . . . + 172 is = ?

 

  • 1] 969
  • 2] 1785
  • 3] 980
  • 4] 1700
Solution
9
Discuss

(4 / 5) × ? × (3 / 7) = (16 / 105)

  • 1]

    8/9

  • 2]

    5/7

  • 3]

    4/9

  • 4]

    3/7

Solution
10
Discuss

Find the value of \(\frac{{{{\left( {0.75} \right)}^3}}}{{1 - 0.75}} + \left[ {0.75 + {{\left( {0.75} \right)}^2} + 1} \right]\)

 

  • 1] 4
  • 2] 3
  • 3] 2
  • 4] 1
Solution
# Quiz