Surds and Indices Practice Question and Answer

Q:

यदि $$ {3^{4x-y}={3^{x+y}=\sqrt{27}}}$$,   है तो y का मान होगा—

1741 0

  • 1
    $$ {9\over 10}$$
    Correct
    Wrong
  • 2
    $$ {3\over 2}$$
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    $$ {3\over 4}$$
    Correct
    Wrong
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Answer : 1. "$$ {9\over 10}$$"

Q:

यदि $$ {81\ × 343\ ×625}={3^{p}}\ {7^{q}}\ {5^{r}}$$  है तो $$ {\sqrt{(p-r)^{2}+q^{2}}}$$ का मान ज्ञात कीजिये।

958 0

  • 1
    5
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    इनमें से कोई नहीं
    Correct
    Wrong
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Answer : 2. "3"

Q:

$$ {\sqrt{(121)}} +{\sqrt{(12321)}}+{\sqrt{(1234321)}}$$ का मान ज्ञात कीजिये।

1083 0

  • 1
    1233
    Correct
    Wrong
  • 2
    1234
    Correct
    Wrong
  • 3
    1244
    Correct
    Wrong
  • 4
    983
    Correct
    Wrong
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Answer : 1. "1233"

Q:

$$ ^{3}\sqrt{-13824}$$.का घनमूल ज्ञात करों?

733 0

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

Q:

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

758 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:

यदि $$ {x^{\sqrt{x}}}={({x{\sqrt{x}}})^{x}}$$, है तो x का मान ज्ञात कीजिये।

874 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:

निम्नलिखित में से कौन सा कथन सत्य हैं?

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

902 0

  • 1
    केवल I तथा II
    Correct
    Wrong
  • 2
    केवल I तथा III
    Correct
    Wrong
  • 3
    केवल I
    Correct
    Wrong
  • 4
    सभी सत्य है।
    Correct
    Wrong
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Answer : 1. "केवल I तथा II"

Q:

निम्नलिखित में से कौन सा कथन सत्य हैं?

I. $$ {33^3}>{3^{33}}$$
II. $$ {333}>{(3^{3})^{3}}$$

1023 0

  • 1
    केवल I
    Correct
    Wrong
  • 2
    केवल II
    Correct
    Wrong
  • 3
    I तथा II दोनों
    Correct
    Wrong
  • 4
    न I तो न ही II
    Correct
    Wrong
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Answer : 4. "न I तो न ही II"

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