. The rational number that does not have a reciprocal is

A: 0

B: 1

C: 4

D: -4

Best Answer


(i) There is no reciprocal for a rational number 0.

The rational number 0 (zero) has no reciprocal since it is undefined ().

1/0 indicates that the value is unknown.

(ii) The rational numbers whose reciprocals are equivalent.

The reciprocals of the rational integers 1 and -1 are the same.

1/1 = 1 is reciprocal, while 1/(-1) = -1 is reciprocal.

(iii) The rational number 0 equals to its negative.

0 is neither a negative nor a positive number.

As a result, 0 is the same as -0.

Final Answer:

Hence, the correct option is (a) 0.



Talk to Our counsellor