Write each of the following statements in the form 'if .... then':
(i) A rhombus is a square only if each of its angles measures `90^(@)`.
(ii) When a number is a multiple of 9, it is necessarily a multiple of 3.
(iii) You get a job implies that your credentials are good.
(iv) Atmospheric humidity increases only if it rains.
(v) If a number is not a multiple of 3, then it is not a multiple of 6.

Explanation

(i) If each angle of a rhombus measures `90^(@)`, then it is a square.
(ii) If a number is a multiple of 9, then it is a multiple of 3.
(iii) If you get a job, then your credentials are good.
(iv) If it rains, then atmospheric humidity increases.
(v) If a number is a multiple of 6, then it is a multiple of 3.