Show that 5/5 is an irrational number.
Solution If possible, let 5V3 be a rational number. So, 53 = p q where p and q are co-prime integers and q=0 So, ſ3= 2 So, R.H.S is a rational number and hence 13 is also rational which is a contradiction. So our supposition is wrong. Hence, 5 is an irrational number
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