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SASMO 2019 Grade 10 Question 10

SASMO · SASMO 2019 Grade 10

Question 10

In a particular week this year, the probability of rain on any given day in Singapore is $50\%$. What is the probability that it rains on exactly two days of that week?

Interpretation: Assume rain events on different days are independent, as required by the intended source solution.
  1. $\frac14$
  2. $\frac3{64}$
  3. $\frac{21}{64}$
  4. $\frac{21}{128}$
  5. None of the above