Answer:
(1) Zero has ________ reciprocal.
Ans: Zero has no reciprocal.
(2) The numbers ________ and ________ are their own reciprocals
Ans: The numbers 1 and -1 are their own reciprocals.
(3) The reciprocal of – 5 is ________.
Ans: The reciprocal of -5 is -1/5
(4) Reciprocal of 1/x, where x ≠ 0 is ________.
Ans: Reciprocal of 1/x, where x ≠ 0 is x.
(5) The product of two rational numbers is always a _______.
Ans: The product of two rational numbers is always a rational number.
(6) The reciprocal of a positive rational number is ________
Ans: The reciprocal of a positive rational number is positive rational numbers.