Quiz Discussion

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 = ?

 

Course Name: Quantitative Aptitude

  • 1] 42
  • 2] 63
  • 3] 115
  • 4] 120
  • 5] 125
Solution
No Solution Present Yet

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# Quiz
1
Discuss

Simplify : \(\left[ {\left( {1 + \frac{1}{{10 + \frac{1}{{10}}}}} \right) \times \left( {1 + \frac{1}{{10 + \frac{1}{{10}}}}} \right) - \left( {1 - \frac{1}{{10 + \frac{1}{{10}}}}} \right) \times \left( {1 - \frac{1}{{10 + \frac{1}{{10}}}}} \right)} \right] \div \left[ {\left( {1 + \frac{1}{{10 + \frac{1}{{10}}}}} \right) + \left( {1 - \frac{1}{{10 + \frac{1}{{10}}}}} \right)} \right] = ?\)

 

  • 1]

    100/101

  • 2]

    90/101

  • 3]

    20/101

  • 4]

    101/100

Solution
2
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
3
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
4
Discuss

5907 – 1296 / 144 = x * 8.0

  • 1]

    700.05

  • 2]

    705.25

  • 3]

    751.54

  • 4]

    737.25

Solution
5
Discuss

The number of pairs of natural numbers the difference of whose squares is 45 will be ?

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

The Value of (\(\sqrt {6} + \sqrt {10} - \sqrt {21} - \sqrt {35}) × (\sqrt {6} - \sqrt {10} + \sqrt {21} - \sqrt {35}\)) = ?

 

  • 1] 27
  • 2] 18
  • 3] 40
  • 4] 10
Solution
7
Discuss

( √5 – 2)^2 = x – √80

  • 1]

    9

  • 2]

    7

  • 3]

    6

  • 4]

    10

Solution
8
Discuss

(9.0 / 2 * 27 / 9 ) / (18/7.5 * 5.0 / 4) = ?

  • 1]

    5.5

  • 2]

    4.0

  • 3]

    4.5

  • 4]

    3.0

Solution
9
Discuss

\(\frac{{38 \times 38 \times 38 + 34 \times 34 \times 34 + 28 \times 28 \times 28 - 38 \times 34 \times 84}}{{38 \times 38 + 34 \times 34 + 28 \times 28 - 38 \times 34 - 34 \times 28 - 38 \times 28}}\)           is equal to = ?

 

  • 1] 24
  • 2] 32
  • 3] 44
  • 4] 100
Solution
10
Discuss

572.0 / 26 * 12 – 200 = (2)^x

  • 1]

    8

  • 2]

    4

  • 3]

    6

  • 4]

    10

Solution
# Quiz