Shaded and numbered spinner events

Shaded and numbered spinner events

Secondary 2
5 marks
TGM Original Questions

A fair spinner has 12 equal sectors numbered 1 to 12. Sectors 2, 3, 5, 8 and 11 are shaded. Find the probability that the selected sector

  1. is even,[1]
  2. is shaded,[1]
  3. is a perfect square,[1]
  4. is even or shaded,[1]
  5. is prime and shaded.[1]

Solution:

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Answer:(i) \(\frac{1}{2}\) (ii) \(\frac{5}{12}\) (iii) \(\frac{1}{4}\) (iv) \(\frac{3}{4}\) (v) \(\frac{1}{3}\).

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