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Question
Classify the following number as rational or irrational with justification:
`3sqrt(18)`
Sum
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Solution
`3sqrt(18) = 3sqrt((3)^2 xx 2)`
= `3 xx 3sqrt(2)`
= `9sqrt(2)`
Hence, it is an irrational number.
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Chapter 1: Number Systems - Exercise 1.2 [Page 6]
