Identify a rational number between 13 and 45
Using commutativity and associativity of addition of rational numbers, express each of the following as a rational number:
(i) 25+73+−45+−13
(ii) 37+−49+−117+79
(iii) 25+83+−1115+45+−23
(iv) 47+0+−89+−137+1721
Choose the rational number which does not lie between −23 and −15
(a)−310
(b)310
(c)−14
(d)−720