Square Roots and Cube Roots Practice Question and Answer

Q:

  The value of $${{1}\over 1+\sqrt { 2} + \sqrt { 3}}+{{1}\over 1-\sqrt { 2} + \sqrt { 3}} $$ is

520 0

  • 1
    $$\sqrt { 2}$$
    Correct
    Wrong
  • 2
    $$\sqrt { 3}$$
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    $$\left( {4}\sqrt { 3}+ \sqrt { 2}\right)$$
    Correct
    Wrong
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Answer : 1. "$$\sqrt { 2}$$"

Q:

What will come in the place of question mark (?) in the following question?

  $$?=5\sqrt{ \left(243 \right)^2}$$

516 0

  • 1
    7
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    8
    Correct
    Wrong
  • 4
    9
    Correct
    Wrong
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Answer : 4. "9"

Q:

Find the square root of (272² - 128²).

480 0

  • 1
    25
    Correct
    Wrong
  • 2
    41
    Correct
    Wrong
  • 3
    12
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 4. "None"

Q:

The value of   $$2+\sqrt{0.09}-{^3\sqrt{0.008}}-75\% $$ of 2.80 is:

472 0

  • 1
    0
    Correct
    Wrong
  • 2
    0.01
    Correct
    Wrong
  • 3
    -1
    Correct
    Wrong
  • 4
    0.001
    Correct
    Wrong
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Answer : 1. "0"

Q:

If x + 1/√x = 6 then x² + 1/x² is equal to :-

468 0

  • 1
    18
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 2. "14"

Q:

Given that √4096 = 64, the value of √4096 + √40.96 +√0.004096 is-

465 0

  • 1
    70.4
    Correct
    Wrong
  • 2
    70.464
    Correct
    Wrong
  • 3
    71.104
    Correct
    Wrong
  • 4
    71.4
    Correct
    Wrong
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Answer : 2. "70.464"
Explanation :

Given Exp. = √4096 + √40.96 +√0.004096

= 64 + 6.4 + 0.064

= 70.464

Q:

√60+√10+√36=?

458 0

  • 1
    56
    Correct
    Wrong
  • 2
    88
    Correct
    Wrong
  • 3
    45
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 4. "None "

Q:

The value of Let $$\left({\sqrt {1875}\over\sqrt { 3888}}÷{\sqrt {1200}\over\sqrt {768}} \right)\ × \left({\sqrt {175}\over\sqrt {1792}} \right)\ $$. Then $$ \sqrt { x}$$ is equal to:

432 0

  • 1
    $$5\over 9$$
    Correct
    Wrong
  • 2
    $$7\over 12$$
    Correct
    Wrong
  • 3
    $$5\over 12$$
    Correct
    Wrong
  • 4
    $$4\over 9$$
    Correct
    Wrong
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Answer : 3. "$$5\over 12$$"

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