A) 0 is called the additive identity for rational number
B) 1 is called the multiplicative identity
C) The additive inverse of 0 is zero itself.
D) All the above
Correct Answer: D
Solution :
(d) All the given statements are correct. Consider\[\frac{1}{7}\]. (a) Since \[\frac{1}{7}+0=\] hence\[\frac{1}{7}\], is the additive identity of rational numbers. (b) Since \[\frac{1}{7}\times 1=\frac{1}{7},1\] is the multiplicative identity of rational number. (c) Since 0 + 0 = 0, 0 is the additive inverse of 0.
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