Properties of ten numbered cards

Properties of ten numbered cards

Secondary 2
4 marks
TGM Original Questions

Each object in the stated selection population is equally likely to be selected.

One card is chosen from cards numbered 4, 7, 9, 10, 12, 15, 17, 18, 20 and 25. Find the probability that the number is

  1. a multiple of 5,[1]
  2. prime,[1]
  3. not divisible by 3,[1]
  4. divisible by 4 or 5.[1]

Solution:

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

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