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Digit events from 0 to 79

Digit events from 0 to 79

Secondary 2
3 marks
TGM Original Questions

One of the integers from 0 to 79 is selected at random. Find the probability that it

  1. has two identical digits,[1]
  2. ends in 6,[1]
  3. does not contain the digit 6.[1]

Solution:

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Answer:(i) \(\frac{7}{80}\) (ii) \(\frac{1}{10}\) (iii) \(\frac{63}{80}\).

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