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1) a) From the set {-8, -2/3, 5i, ?(-9), ?2, 0, 3+3i,-2.35, 7}

i) List the set of         NaturalNumbers

ii) List the set of        Integers

iii) List of the set of    RationalNumbers

vi) List the set of        RealNumbers                                               

b) i) -30 ÷ -6 - (-12 + 8) – 4 x 3=                        ii) 10(-2) - (-6)4

                        (-10) – 6(-3)=       (4, 4 marks)

2) a)1²/₅x 2 ¹/₇ ÷ 1⁴/₅=                                                                          

2. After winning from a lottery were divided in the ratio2 : 3 : 5,

If the largest amount received was$150,000.xx

How much was:-        i) The smallest amount =

                                  ii) The Total amount of prize money =        (3, 2 marks)

3) a) i) Calculate the simple interest earned if a deposit of$ 900,000 is

                       left for 12 years at an interest rate of3%.                           

          ii)Calculate the interest rate for a 12 years investment of$600,000 to gained

                        $180,000interest.                                                                

2.    Solve

                            2(3x– 2 )= 6x - 2    + 1

                                    3            4                         (6 marks )                                                                        

c) Solve the following pairs of simultaneous equations

                     3x + y = 7   and     2x - 2y = 2