Subject :IMO Class : Class 7
Which of the following statements is true?
A 1 and –1 are reciprocal of themselves.
B Zero has no reciprocal.
C The product of two rational numbers is a rational number.
D All of these
Ans 1:
Class : Class 7
Ans 2:
Class : Class 9
reciprocal of 1 is 1 and multiplicative inverse of 1 is -1.
Ans 3:
Class : Class 9
The reciprocal of 1 is -1 then how is this question right? Then how is D correct since only two of the options are correct. I think this is wrong