Mathematics for IGCSE & O level - Probability (Section 3 - No. 11)
A fair coin is tossed twice. Which of the following is(are) correct?
The probability of getting two heads is 1/4.
The probability of getting a head and a tail (in any order) is 1/2.
The events are dependent.
The outcomes can be represented by a tree diagram.
คำอธิบาย
The events of tossing a coin are independent. Getting two heads: (1/2) * (1/2) = 1/4. Getting a head and tail: (1/2)*(1/2) + (1/2)*(1/2) = 1/2. The outcomes can be shown by a tree diagram