Edexcel S2 2006 January — Question 1

Exam BoardEdexcel
ModuleS2 (Statistics 2)
Year2006
SessionJanuary
TopicBinomial Distribution
TypeGeometric distribution (first success)
  1. A fair coin is tossed 4 times.
Find the probability that
  1. an equal number of head and tails occur
  2. all the outcomes are the same,
  3. the first tail occurs on the third throw.
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