Question

For two coins tossed, what does the condition “No head” mean?

Options

• 1 or more tails, giving \(\{HT, TH, TT\}\) with \(n = 3\)

• 0 heads, giving \(\{TT\}\) with \(n = 1\)

• Exactly 1 head, giving \(\{HT, TH\}\) with \(n = 2\)

• 0 or 1 tail, giving \(\{HH, HT, TH\}\) with \(n = 3\)

Answer 1

“No head” means that the number of heads is 0. Both coins must therefore show tails, giving the single outcome \(TT\).