Select the pair of integers a - b such that a - b -4A- 2-2B- 8-2C- -4-2D- 16-4

The correct options are B (8, 2) D (16, 4) 2/( 2) = 1. nbsp;Therefore ( 2, 2) is not nbsp; the required pair. 8/( 2) = 4. nbsp;Therefore (8, 2) is t ...

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Standard VII

Mathematics

Properties of Multiplication of Integers

Select the pa...

Question

Select the pair of integers $(a, b)$ such that $\frac{a}{b} = - 4$

(2,-2)

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(8,-2)

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(-4,2)

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(16, -4)

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Solution

The correct options are
B
(8,-2)

D
(16, -4)

$\frac{- 2}{(- 2)}$ = 1. Therefore (-2, -2) is not the required pair.

$\frac{8}{(- 2)}$ = -4. Therefore (8, -2) is the required pair.

$\frac{- 4}{(- 2)}$ = 2. Therefore (-4, -2) is not the required pair.

$\frac{16}{(- 4)}$ = -4. Therefore (16, -4) is the required pair.

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Select the pair of integers (a,b) such that ab=−4

The correct options are B (8,-2) D (16, -4) −2(−2) = 1. Therefore (-2, -2) is not the required pair. 8(−2) = -4. Therefore (8, -2) is the required pair. −4(−2) = 2. Therefore (-4, -2) is not the required pair. 16(−4) = -4. Therefore (16, -4) is the required pair.

Select the pair of integers $(a, b)$ such that $\frac{a}{b} = - 4$