If \(\sqrt 5 = 2.236{ \text{,}}\) then the value of \(\frac{1}{{\sqrt 5 }} \) is = ?
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1
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While solving a mathematical problem, Samidha squared a number and then subtracted 25 from it rather than the required i.e., first subtracting 25 from the number and then squaring it. But she got the right answer. What was the given number ?
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2
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By what least number 4320 be multiplied to obtain a number which is a perfect cube?
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3
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\(\sqrt {\frac{{25}}{{81}} - \frac{1}{9}} = ?\)
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4
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If \(a = \frac{{\sqrt 3 + \sqrt 2 }}{{\sqrt 3 - \sqrt 2 }}, b = \frac{{\sqrt 3 - \sqrt 2 }}{{\sqrt 3 + \sqrt 2 }}\) then the value of \({a^2} + {b^2}\) would be = ?
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5
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Which of the following is closest to \(\sqrt 3 = ?\)
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6
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If \(\sqrt y = 4x{ \text{}} \) then \(\frac{{{x^2}}}{y}\) is = ?
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7
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How many two-digit numbers satisfy this property. : The last digit (unit's digit) of the square of the two-digit number is 8 ?
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8
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If \(\sqrt 6 = 2.449{ \text{,}}\) then the value of \(\frac{{3\sqrt 2 }}{{2\sqrt 3 }}\) is = ?
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9
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If \(a = \frac{{\sqrt 3 }}{2}{ \text{}}\) then \(\sqrt {1 + a} + \sqrt {1 - a} = ?\)
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10
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\(\sqrt {110.25} \times \sqrt {0.01} \div \) \(\sqrt {0.0025}\) - \(\sqrt {420.25}\) equals ?
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