2026 IGCSE 0580 February/March P22 Q3

2026 IGCSE 0580 February/March P22 Q3

5 marks
  1. From this list of numbers, write down
    1. a prime number[1]
    2. a cube number[1]
    3. two numbers with a product of \(550\).[1]
  2. Rishwan writes each of these numbers on a card.
    Rishwan picks a card at random and replaces it.
    1. Find the probability that he picks a natural number.[1]
    2. He repeats this \(140\) times.
      Find the expected number of times that Rishwan picks a natural number.[1]

Solution:

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Answer:(a)(i) \(83\), (ii) \(27\), (iii) \(-50,-11\). (b)(i) \(\dfrac57\), (ii) \(100\).

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