Decimal Fractions Practice Question and Answer

Q:

What is the value of a when $$ {x^{2(3a+1)}}={x^{3}}$$ ?

850 0

  • 1
    $$ {1\over 6}$$
    Correct
    Wrong
  • 2
    $$ {2\over 3}$$
    Correct
    Wrong
  • 3
    $$ {1\over 12}$$
    Correct
    Wrong
  • 4
    $$ {2\over 5}$$
    Correct
    Wrong
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Answer : 1. "$$ {1\over 6}$$"

Q:

Simplify $$ {^3\sqrt {{4} {12\over {125}}}}$$.

881 0

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

Q:

Find the value of $$ {^3\sqrt{\sqrt{.000064}}}$$.

813 0

  • 1
    0.002
    Correct
    Wrong
  • 2
    0.0002
    Correct
    Wrong
  • 3
    0.2
    Correct
    Wrong
  • 4
    0.02
    Correct
    Wrong
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Answer : 3. "0.2"

Q:

Two numbers are in the ratio x : y . If 2 is added to both numerator and denominator ,  the fraction becomes $$ 1\over2$$. Find the value of x + y . 

1299 0

  • 1
    2
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 4. "5 "

Q:

Which of the following is largest fraction amongst $$ {5\over8}$$, $$ {3\over7}$$, $$ {2\over9}$$,  $$ {4\over5}$$?

1052 0

  • 1
    $$ {3\over7}$$
    Correct
    Wrong
  • 2
    $$ {5\over8}$$
    Correct
    Wrong
  • 3
    $$ {4\over5}$$
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "$$ {4\over5}$$"

Q:

Sum of 5 times of a fraction and 4 times its reciprocal is 9. What is fraction?

1597 0

  • 1
    $$ {2\over7}$$
    Correct
    Wrong
  • 2
    $$ {5\over4}$$
    Correct
    Wrong
  • 3
    $$ {4\over5}$$
    Correct
    Wrong
  • 4
    $$ {7\over2}$$
    Correct
    Wrong
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Answer : 3. "$$ {4\over5}$$"

Q:

What approximate value should come in place of the question mark(?) in the following question?
105.003+307.993+ 215.630=?

2347 0

  • 1
    610
    Correct
    Wrong
  • 2
    650
    Correct
    Wrong
  • 3
    660
    Correct
    Wrong
  • 4
    670
    Correct
    Wrong
  • 5
    630
    Correct
    Wrong
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Answer : 5. "630"
Explanation :

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