Quiz Discussion

On simplification the value of \({ \text{1}} - \frac{1}{{1 + \sqrt 2 }}{ \text{ + }}  \frac{1}{{1 - \sqrt 2 }}\)  is = ?

 

Course Name: Quantitative Aptitude

  • 1]

    \(2\sqrt 2 - 1\)

  • 2]

    \(1 - 2\sqrt 2 \)

  • 3]

    \(1 - \sqrt 2 \)

  • 4]

    \( - 2\sqrt 2 \)

Solution
No Solution Present Yet

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# Quiz
1
Discuss

\({{{{(469 + 174)}^2} - {{(469 - 174)}^2}} \over {(469 \times 174)}} = ?\)

 

  • 1] 1
  • 2] 4
  • 3] 295
  • 4] 643
Solution
2
Discuss

If \(\left( {x + \frac{1}{x}} \right){ \text{ = 2,}}\)    then \(\left( {x - \frac{1}{x}} \right)\)   is equal to = ?

 

  • 1] 0
  • 2] 1
  • 3] 2
  • 4] 5
Solution
3
Discuss

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 \(\frac{{x - y}}{{1 + xy}}\)   = ?

 

  • 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
4
Discuss

98643 – 21748 = 51212 + ?

  • 1]

    24383

  • 2]

    24713

  • 3]

    25683

  • 4]

    26243

Solution
5
Discuss

Number of digits in the square root of 62478078 is = ?

  • 1] 4
  • 2] 5
  • 3] 6
  • 4] 3
Solution
6
Discuss

Simplify : \({ \text{8}}\frac{1}{2} - \left[ {3\frac{1}{4} + \left\{ {1\frac{1}{4} - \frac{1}{2}\left( {1\frac{1}{2} - \frac{1}{3} - \frac{1}{6}} \right)} \right\}} \right]\)

 

  • 1]

    \(4\frac{1}{2}\)

  • 2]

    \(4\frac{1}{6}\)

  • 3]

    \(9\frac{1}{2}\)

  • 4]

    \(\frac{2}{9}\)

Solution
7
Discuss

\(1\frac{3}{4} - 1\frac{1}{5} + 1\frac{5}{8} = ?\)

 

  • 1]

    \(2\frac{7}{{40}}\)

  • 2]

    \(3\frac{7}{{40}}\)

  • 3]

    \(9\frac{5}{8}\)

  • 4]

    \(10\frac{7}{8}\)

  • 5]

    None of these

Solution
8
Discuss

The expression \(\frac{1}{{x - 1}} - \frac{1}{{x + 1}} - \frac{2}{{{x^2} + 1}} - \frac{4}{{{x^4} + 1}}\)  is equal to = ?

 

  • 1]

    \(\frac{8}{{{x^8} + 1}}\)

  • 2]

    \(\frac{8}{{{x^8} - 1}}\)

  • 3]

    \(\frac{8}{{{x^7} - 1}}\)

  • 4]

    \(\frac{8}{{{x^7} + 1}}\)

Solution
9
Discuss

\({ \text{If }}\left( {{n^r} - tn + \frac{1}{4}} \right)\)     be a perfect square, then the values of t are = ?

 

  • 1] ± 2
  • 2] 1, 2
  • 3] 2, 3
  • 4] ± 1
Solution
10
Discuss

The value of \({ \text{3}}\frac{1}{2} - \left[ {2\frac{1}{4} \div \left\{ {1\frac{1}{4} - \frac{1}{2}\left( {1\frac{1}{2} - \frac{1}{3} - \frac{1}{6}} \right)} \right\}} \right]\)       = ?

 

  • 1]

    1/2

  • 2]

    \(2\frac{1}{2}\)

  • 3]

    \(3\frac{1}{2}\)

  • 4]

    \(9\frac{1}{2}\)

Solution
# Quiz