Quiz Discussion

If \(3a = 4b = 6c   \)  and \(a + b + c = 27\sqrt {29} { \text{,}}   \) then\( \sqrt {{a^2} + {b^2} + {c^2}} \)is ?

 

Course Name: Quantitative Aptitude

  • 1]

    \(3\sqrt {29} \)

  • 2]

    81

  • 3]

    87

  • 4]

    None of these

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Which number can replace both the question marks in the equation =?

 

  • 1]

    12

  • 2]

    7

  • 3]

  • 4]

    None of these

Solution
2
Discuss

What percentage of the numbers from 1 to 50 have squares that end in the digit 1 ?

  • 1] 1%
  • 2] 5%
  • 3] 10%
  • 4] 11%
  • 5] 20%
Solution
3
Discuss

The square root of (2722−1282) is

  • 1]

    144

  • 2]

    200

  • 3]

    240

  • 4]

    256

Solution
4
Discuss

\({1.5^2} \times \sqrt {0.0225} = ?\)

 

  • 1] 0.0375
  • 2] 0.3375
  • 3] 3.275
  • 4] 32.75
Solution
5
Discuss

The digit in the units place in the square root of 15876 is 

  • 1]

    8

  • 2]

    6

  • 3]

    4

  • 4]

    2

Solution
6
Discuss

What should come in place of both x in the equation \(\frac{x}{{\sqrt {128} }} = \frac{{\sqrt {162} }}{x}\)

 

  • 1] 12
  • 2] 14
  • 3] 144
  • 4] 196
Solution
7
Discuss

Given \(\sqrt 5 = 2.2361,   \sqrt 3 = 1.7321{ \text{,}}   then \frac{1}{{\sqrt 5 - \sqrt 3 }}\)   is equal to ?

 

  • 1] 1.98
  • 2] 1.984
  • 3] 1.9841
  • 4] 2
Solution
8
Discuss

If \(a = \frac{{\sqrt 5 + 1}}{{\sqrt 5 - 1}}   \) and \(b = \frac{{\sqrt 5 - 1}}{{\sqrt 5 + 1}},\)   the value of \(\left( {\frac{{{a^2} + ab + {b^2}}}{{{a^2} - ab + {b^2}}}} \right)\)   is ?

 

  • 1]

    3/4

  • 2]

    4/3

  • 3]

    3/5

  • 4]

    5/3

Solution
9
Discuss

The least perfect square, which is divisible by each of 21, 36 and 66 is:

 

  • 1] 213444
  • 2] 214344
  • 3] 214434
  • 4] 231444
Solution
10
Discuss

What is the smallest number by which 3600 be divided to make it a perfect cube ?

  • 1] 9
  • 2] 50
  • 3] 300
  • 4] 450
Solution
# Quiz