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

Evaluate : \(\frac{{\left( {923 - 347} \right)}}{?} = 32\)

 

  • 1] 35
  • 2] 20
  • 3] 18
  • 4] 15
  • 5] 40
Solution
2
Discuss

Given that =3.605 and =11.40 , Find the value of  + +

  • 1]

    36.164

  • 2]

    36.304

  • 3]

    37.164

  • 4]

    37.304

Solution
3
Discuss

The value of \(\frac{{\sqrt {80} - \sqrt {112} }}{{\sqrt {45} - \sqrt {63} }} = ?\)

 

  • 1]

    3/4

  • 2]

    \(1\frac{3}{4}\)

  • 3]

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

  • 4]

    \(1\frac{7}{9}\)

Solution
4
Discuss

The lowest temperature in the night in a city is one third more than 1/2 the highest during the day. Sum of the lowest temperature and the highest temperature is 100 degrees. Then what is the lowest temperature?

 

  • 1] 30 degrees
  • 2] 40 degrees
  • 3] 36 degrees
  • 4] None of these
Solution
5
Discuss

\(\frac{{{{\left( {a - b} \right)}^2} - {{\left( {a + b} \right)}^2}}}{{ - 4a}}{ \text{ = }}\frac{x}{y}\)     On simplifying the given equations, which of the following equations will be obtained ?

 

  • 1] xy = b
  • 2] bx = y
  • 3] ab = x
  • 4] yb = x
  • 5] ay = x
Solution
6
Discuss

\(\left( {\frac{{785 \times 785 \times 785 + 435 \times 435 \times 435}}{{785 \times 785 + 435 \times 435 - 785 \times 435}}} \right)\)       simplifies to = ?

 

  • 1] 350
  • 2] 785
  • 3] 1220
  • 4] 1320
Solution
7
Discuss

Find the value of \(\sqrt {248 + \sqrt {52 + \sqrt {144} } } = ?\)

 

  • 1]

    -16

  • 2]

    \(\pm 16\)

  • 3]

    16

  • 4]

    16.2

Solution
8
Discuss

\({ \text{If }}x = \frac{1}{{2 + \frac{1}{2}}}{ \text{ then }}\frac{1}{x} = ?\)

 

  • 1]

    2/5

  • 2]

    5/2

  • 3]

    3/5

  • 4]

    1/2

Solution
9
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
10
Discuss

If x + y + z = 0, then x3 + y3 + z3 + 3xyz is equal to = ?

  • 1] 0
  • 2] 6xyz
  • 3] 12xyz
  • 4] xyz
Solution
# Quiz