A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:
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1
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If \(\root 3 \of {{3^n}} { \text{ = 27,}}\) then the value of n is = ?
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2
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98643 – 21748 = 51212 + ?
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3
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What number must be added to the expression 16a2 - 12a to make a perfect square ?
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4
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\(4\frac{4}{5} \div 6\frac{2}{5} = ?\)
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5
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The simplest value of \(\left( {\frac{1}{{\sqrt 9 - \sqrt 8 }} - \frac{1}{{\sqrt 8 - \sqrt 7 }} + \frac{1}{{\sqrt 7 - \sqrt 6 }} - \frac{1}{{\sqrt 6 - \sqrt 5 }}} \right)\) is = ?
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6
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\(\frac{3}{2} \times \frac{{11}}{5} \div \left( {\frac{{25}}{{44}} \times \frac{{11}}{5}} \right) \div \frac{{33}}{{15}} = ?\)
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7
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To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present ?
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8
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If \( \left( {x + \frac{1}{x}} \right){ \text{ = }}\sqrt {13} { \text{,}} \) then the value of \(\left( {{x^3} - \frac{1}{{{x^3}}}} \right)\) is = ?
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9
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\(1 + \frac{1}{2} + \frac{1}{4} + \frac{1}{7} + \frac{1}{{14}} + \frac{1}{{28}}\) is equal to = ?
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10
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Number of digits in the square root of 62478078 is = ?
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