Adding blocks to reach a target probability

Adding blocks to reach a target probability

Secondary 2
TGM Original Questions

A box contains 8 red, 11 yellow and 6 blue blocks.

  1. State the total number of outcomes.
  2. Find the probability of red or yellow.
  3. Yellow blocks are added until the probability of yellow is \(1/2\). Find the new total number of blocks.

Solution:

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Answer:(a) \(25\); (b) \(19/25\); (c) \(28\).

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