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Question

In rationalisation, a number which when multiplied with an irrational number to get a rational denominator is called:

A
Radicands
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B
Rationalising factor
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C
Conjugate
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D
None of the above
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Solution

The correct option is B Rationalising factor
To make the denominator a rational number, we multiply both numerator and denominator with the conjugate surd (of the denominator) which is also called rationalising factor.
And this process is called rationalisation.

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