Fill in the blanks:
(i) The product of two positive rational numbers is always………..
(ii) The product of a positive rational number and a negative rational number is always ……..
(iii) The product of two negative rational numbers is always………..
(iv)The reciprocal of a positive rational numbers is ………..
(v) The reciprocal of a negative rational number is………..
(vi) The product of a rational number and its reciprocal is……..
(vii) Zero has……. reciprocal
(viii) The numbers……. and….. are their own reciprocals.
(ix)If a is reciprocal of b, then the reciprocal of b is ………
(x) The number 0 is ……… the reciprocal of any number.
(xi) Reciprocal of
is
(xii) 