In a school, n+100 students have access to three software packages A, B and C.n-1 did not use any software , n-2 used only packages A n-3 used only packages B , n-4 used only packages C n-5 used all three packages,n-6 used both A and B.where n is your arid number i.e. 19-arid-234 take n=234 a) Draw a Venn diagram with all sets enumerated as for as possible. Label the two subsets which cannot be enumerated as x and y in any order. b) If twice as many students used package B as package A, write down a pair of simultaneous equations in x and y.c)Solve the equations to find x and y. d)How many students used package C?
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87 students used package C.