Digit events from 0 to 79

Digit events from 0 to 79

Secondary 2
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,
  2. ends in 6,
  3. does not contain the digit 6.

Solution:

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Answer:(i) \(7/80\); (ii) \(1/10\); (iii) \(63/80\).

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