Class VIII, CBSE Mathematics
Chapter 1, Rational Numbers (NCERT Math Solutions)
Exercise 1.1 Solutions (Rational Numbers)
(i) 1 is the multiplicative identity.
No, for multiplicative inverse, the product will be 1. But, here the product is not 1.
(i) The rational number that does not have a reciprocal.
(ii) The rational numbers that are equal to their reciprocals.
(iii) The rational number that is equal to its negative.
(i) Zero has no reciprocal.
(ii) The reciprocals of 1 is 1. Therefore, 1 is the rational number which is equal to its reciprocal.
(iii) Zero is the rational number that is equal to its negative.
Q.11: Fill in the blanks.
(i) Zero has __________ reciprocal.
(ii) The numbers __________ and __________ are their own reciprocals
Ans: 1, -1
(v) The product of two rational numbers is always a __________.
Ans: rational number
(vi) The reciprocal of a positive rational number is __________.
Ans: positive rational number.