In a science lesson, a technician uses a fair spinner with five equal sections numbered 1 to 5 to demonstrate random outcomes. The spinner is spun once. Wor...
Question 1 Report
In a science lesson, a technician uses a fair spinner with five equal sections numbered 1 to 5 to demonstrate random outcomes. The spinner is spun once. Work out the probability that it lands on a number greater than 3. (2)
Answer Details
For a fair spinner, every section is equally likely, so the probability of any event is the number of favourable sections divided by the total number of sections.
Out of the five numbers 1 to 5, the numbers greater than 3 are 4 and 5, giving 2 favourable outcomes out of 5 equally likely outcomes. So \(P(\text{greater than }3) = \dfrac{2}{5}\). [2 marks]
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