If x =pq ,and q is not of the form 2m5n then x is terminating.
Let x=pq be a rational number, such that the prime factorisation of q is not of the form 2m5n, where n, m are non-negative integers. Then, x has a decimal expansion which is
Water is cooled from 4∘C to 0∘C. It :
(a) contracts (b) expands
(c) first contracts, then expands
(d) first expands, then contracts.