First Year Math Number Systems

$Q.64 Conjugate of -2+3 i is :(a) -2-3 i (b) 2-3 i (c) 2+3 i (d) -2+3 i Faisalabad Board 2012$

$Q.71 Modulus of 8-15 i is :(a) 8(b) -15 (c) 17(d) 8+15 i$

$Theorems: \forall z z_{1} z_{2} \in C iv) \overline{z_{1}+z_{2}}=\bar{z}_{1}+\bar{z}_{2}$

$Simplify the following:10. (03)(05)$

$Q.7 Every non-repeating non-terminating decimal is(a) rational number(b) irrational number(c) integer(d) none of these$

$3. Name the properties used in the following inequalities:vi) a>b \Rightarrow-a<-b$