Surds and Indices Questions Practice Question and Answer

Q:

$$ {5^{1\over 4}├Ч(125)^{0.25}}$$ ┬ардХреЗ рдмрд░рд╛рдмрд░ рд╣реИред

939 0

  • 1
    $$ {\sqrt{5}}$$
    Correct
    Wrong
  • 2
    $$ {5\sqrt{5}}$$
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
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Answer : 3. "5"

Q:

$$ {({1\over25})^{-1\over2}}+{({8\over 27})^{-1\over3}}$$.

937 0

  • 1
    $$ {9\over 2}$$
    Correct
    Wrong
  • 2
    $$ {13\over 2}$$
    Correct
    Wrong
  • 3
    $$ {13\over 15}$$
    Correct
    Wrong
  • 4
    $$ {5\over 9}$$
    Correct
    Wrong
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Answer : 2. "$$ {13\over 2}$$"

Q:

рдирд┐рдореНрдирд▓рд┐рдЦрд┐рдд рдореЗрдВ рд╕реЗ рдХреМрди рд╕рд╛ рдХрдерди рд╕рддреНрдп рд╣реИрдВ?

I. $$ {\sqrt{12}}>{^{3}{\sqrt{16}}}>{^{4}{\sqrt{24}}}$$
II. $$ ^{3}{\sqrt{25}}>{^{4}{\sqrt{32}}}>{^{6}{\sqrt{48}}}$$
III. $$ ^{4}{\sqrt{9}}>{^{3}{\sqrt{15}}}>{^{6}{\sqrt{24}}}$$

886 0

  • 1
    рдХреЗрд╡рд▓ I рддрдерд╛ II
    Correct
    Wrong
  • 2
    рдХреЗрд╡рд▓ I рддрдерд╛ III
    Correct
    Wrong
  • 3
    рдХреЗрд╡рд▓ I
    Correct
    Wrong
  • 4
    рд╕рднреА рд╕рддреНрдп рд╣реИред
    Correct
    Wrong
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Answer : 1. "рдХреЗрд╡рд▓ I рддрдерд╛ II"

Q:

рдпрджрд┐┬а$$ ┬а3 ^{2x-y}=3^{x+y}=\sqrt{27}$$┬а┬ард╣реИ рддреЛ┬а┬аy┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛тАФ

866 0

  • 1
    $$ {1\over2}$$
    Correct
    Wrong
  • 2
    $$ {3\over2}$$
    Correct
    Wrong
  • 3
    $$ {1\over8}$$
    Correct
    Wrong
  • 4
    $$ {3\over4}$$
    Correct
    Wrong
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Answer : 1. "$$ {1\over2}$$"

Q:

рдпрджрд┐┬а$$ {x^{\sqrt{x}}}={({x{\sqrt{x}}})^{x}}$$,┬ард╣реИ рддреЛ┬аx┬ардХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдпреЗред

865 0

  • 1
    $$ {3\over4}$$
    Correct
    Wrong
  • 2
    $$ {3\over5}$$
    Correct
    Wrong
  • 3
    $$ {9\over4}$$
    Correct
    Wrong
  • 4
    $$ {7\over4}$$
    Correct
    Wrong
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Answer : 3. "$$ {9\over4}$$"

Q:

рдпрджрд┐┬а$$ {2^{2n-1}}={1\over8^{n-3}}$$,┬ард╣реИ рддреЛ┬аn┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛ред

768 0

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

Q:

$$ {{2^n+2^{n-1}}\over {2^{n+1} -2^n}}=?$$.

750 0

  • 1
    $$ {3\over2}$$
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    $$ {2\over3}$$
    Correct
    Wrong
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Answer : 1. "$$ {3\over2}$$"

Q:

$$ ^{3}\sqrt{-13824}$$.рдХрд╛ рдШрдирдореВрд▓ рдЬреНрдЮрд╛рдд рдХрд░реЛрдВ?

729 0

  • 1
    24
    Correct
    Wrong
  • 2
    38
    Correct
    Wrong
  • 3
    -24
    Correct
    Wrong
  • 4
    -38
    Correct
    Wrong
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Answer : 3. "-24"

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