Question 98442
Any number which cannot be expressed in the form a/b where b not equal to zero is a irrational number

the given numbers are 
17/3  since its in the form of a/b with b!=0 hence rational
-1.82 = -182/100 again can be expressed in the form of a/b where b!=0
{{{sqrt(11)}}} cannot be expressed in the form of a/b and is IRRATIONAL
5.3/3 = 53/10 can be expressed as a/b and is rational