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Associative property

(10×3)×5= n...

Question

(10×3)×5=

A

10×(3×5)

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B

10+(3×5)

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C

10+3+5

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D

10×(3+5)

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Solution

The correct option is A 10×(3×5)
Associative property of multiplication holds good for whole numbers
$∴$ (10 $\times$ 3) $\times$ 5 = 10 $\times$ (3 $\times$ 5)

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\frac{15}{\sqrt{10} + \sqrt{20} + \sqrt{40} - \sqrt{5} - \sqrt{80}}

, it being given that

\sqrt{5} = 2.236 and \sqrt{10} = 3.162

\begin{array}{rcl} \frac{15}{\sqrt{10} + \sqrt{20} + \sqrt{40} - \sqrt{5} - \sqrt{80}} & = & \frac{15}{\sqrt{10} + 2 \sqrt{5} + 2 \sqrt{10} - \sqrt{5} - 4 \sqrt{5}} \\ = & \frac{15}{3 \sqrt{10} - 3 \sqrt{5}} = \frac{5}{\sqrt{10} - \sqrt{5}} \end{array}

f (x) = ⎧ ⎨ ⎩ \begin{matrix} \frac{x^{2} - 25}{x - 5}, w h e n x \neq 5 10, w h e n x = 5 \end{matrix}

is continuous at

x = 5

Q. Find p : ( 52)7*(5)3*5/510= (53)p

Q. The sum of rational term in

(\sqrt{2} + \sqrt[3]{3} + \sqrt[5]{5})^{10}

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