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The value of the following is : (0.2 xx ...

The value of the following is : `(0.2 xx 0.02 xx 0.002 xx 32)/(0.4 xx 0.04 xx 0.004 xx 16)`

A

0.2

B

0.5

C

0.4

D

0.25

Text Solution

AI Generated Solution

The correct Answer is:
To solve the expression \((0.2 \times 0.02 \times 0.002 \times 32)/(0.4 \times 0.04 \times 0.004 \times 16)\), we will simplify it step by step. ### Step 1: Write the expression clearly We start with the expression: \[ \frac{0.2 \times 0.02 \times 0.002 \times 32}{0.4 \times 0.04 \times 0.004 \times 16} \] ### Step 2: Simplify the fractions We can simplify the fractions by breaking down the numbers: - The numerator: \(0.2 = \frac{2}{10} = \frac{1}{5}\) - The denominator: \(0.4 = \frac{4}{10} = \frac{2}{5}\) Thus, we can rewrite the expression as: \[ \frac{\frac{1}{5} \times 0.02 \times 0.002 \times 32}{\frac{2}{5} \times 0.04 \times 0.004 \times 16} \] ### Step 3: Substitute the decimal values Next, we convert the decimals in the numerator and denominator: - \(0.02 = \frac{2}{100} = \frac{1}{50}\) - \(0.002 = \frac{2}{1000} = \frac{1}{500}\) - \(0.04 = \frac{4}{100} = \frac{1}{25}\) - \(0.004 = \frac{4}{1000} = \frac{1}{250}\) Now substituting these values, we have: \[ \frac{\frac{1}{5} \times \frac{1}{50} \times \frac{1}{500} \times 32}{\frac{2}{5} \times \frac{1}{25} \times \frac{1}{250} \times 16} \] ### Step 4: Simplify the numerator and denominator Now we can combine the fractions: - Numerator: \[ \frac{32}{5 \times 50 \times 500} = \frac{32}{125000} \] - Denominator: \[ \frac{2 \times 16}{5 \times 25 \times 250} = \frac{32}{12500} \] ### Step 5: Form the new fraction Now we can form the new fraction: \[ \frac{\frac{32}{125000}}{\frac{32}{12500}} = \frac{32 \times 12500}{32 \times 125000} \] ### Step 6: Cancel out the common terms The \(32\) cancels out: \[ \frac{12500}{125000} = \frac{1}{10} \] ### Step 7: Final simplification Now, we can simplify \(\frac{1}{10}\) to decimal: \[ \frac{1}{10} = 0.1 \] ### Conclusion The value of the expression is \(0.1\).
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Knowledge Check

  • 0.4 xx 0.4 xx 0.4 = ?

    A
    6.4
    B
    0.64
    C
    0.064
    D
    none of these
  • 0.04xx0.04xx0.04= ?

    A
    `0.064`
    B
    `0.00064`
    C
    `0.0064`
    D
    `0.000064`
  • The value of (0.1 xx 0.1 xx 0.1 + 0.02 xx 0.02 xx 0.02)/(0.2 xx 0.2 xx 0.2 + 0.4 xx 0.04 xx 0.004) is :

    A
    A) 0.0125
    B
    B) 0.125
    C
    C) 0.25
    D
    D) 0.5
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