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Show that 5√6 is irrational number.
Let 5√6 be a rational number, which can be expressed as a/b, where b≠0 and a and b are the integers
⇒ 5√6 = a/b
⇒ √6 = a/5b
⇒ √6 = rational
But √6 is an irrational number.
Thus, assumption is wrong.
Hence, 5√6 is irrational number.
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