2025 MGS(S) PRELIMS P1 Q17

2025 MGS(S) PRELIMS P1 Q17

Secondary 4
3 marks
  1. On the Venn diagram, shade the region which represents \(A'\cup B\).[1]
  2. \(\mathcal E=\{x\in\mathbb Z:1\leq x<10\}\), \(P=\{\text{multiples of}\hspace{0.5em}3\}\), and \(Q=\{\text{perfect squares}\hspace{0.15em}\}\).
    1. List the elements in \(P'\cap Q'\).[1]
    2. A number \(y\) is chosen at random from \(P\cup Q\). Find the probability that \(y\notin P\).[1]

Solution:

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Answer:(a) Shade \(A'\cup B\) (b)(i) \(\{2,5,7,8\}\) (b)(ii) \(\frac25\)

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