Solve \({ \text{1}}\frac{4}{5} + 20 - 280 \div 25 = ?\)
\(8\frac{1}{5}\)
\(9\frac{1}{2}\)
\(11\frac{1}{2}\)
\(10\frac{3}{5}\)
\(12\frac{1}{5}\)
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1
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The number of pairs of natural numbers the difference of whose squares is 45 will be ?
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2
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A millionaire bought a lot of hats 1/4 of which were brown. The millionaire sold 2/3 of the including 4/5 of the brown hats. What fraction of the unsold hats were brown ?
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3
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The value of \(\frac{5}{{1\frac{7}{8}{ \text{of 1}}\frac{1}{3}}} \times \frac{{2\frac{1}{{10}}}}{{3\frac{1}{2}}}{ \text{ of 1}}\frac{1}{4} = ?\)
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4
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\(\frac{{ \root 3 \of 8 }}{{\sqrt {16} }} \div \sqrt {\frac{{100}}{{49}}} \times \root 3 \of {125} \) is equal to = ?
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5
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If the sum of two numbers is 22 and the sum of their squares is 404, then the product of two numbers is = ?
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6
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64^12 / 4^15 = 64^x
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7
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Simplify : \(1 + {2 \over {1 + {3 \over {1 + {4 \over 5}}}}}\)
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8
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If \(\left( {x - \frac{1}{x}} \right){ \text{ = }}\sqrt {21} { \text{,}} \) then the value of \(\left( {{x^2} + \frac{1}{{{x^2}}}} \right) \left( {x + \frac{1}{x}} \right)\) is = ?
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9
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(4/9) × 1701 + (2/11) × 1386 = ?
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10
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Solve : 128.43 + 30.21 + ? = 173
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