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Additive inverse of a real number b is………
a) 1         
b) -1.                                      
c) b          
d) -b

d

A+(-a)=0=(-a)+a, for all a R is called.....property of real numbers.
a) additive inverse             
b) commutative                               
c) additive identity              
d) closure  

a



Properties of Real numbers w.r.t Multiplication:



d

Explanation:For all 3, 4 from R3+4 = 7 is also from R



b

Explanation:For all 5, 6 from R
(5)(6) = (6)(5)
30 = 30



c