June 1, 2023
IBDP Mathematics Question Analysis Topic: Mathematics - Probability
Exam Question:
The probability of selecting a rotten apple randomly from a heap of 900 apples is 0.18. What is the number of rotten apple in the heap?
Answer:
For IBDP Mathematics, you should know:
Let A be the event that a rotten apple is selected.
Therefore, P(A) = 0.18
Total number of apples = 990 (given)
P(A) = n(A)/n(S),
therefore n(A) = 0.18 x 900
n(A) = 162
As such, there are 162 rotten apples in the heap.
Work hard for your IBDP Mathematics examination!
End of analysis. Great!