Paper 2 · Probability ⏱ Tested in 4 exam questions since 2018 Lesson 4 of 11

LCOL Probability 4: Factorials

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You’ll learn

  • Simplify a fraction of factorials by cancelling

Formula used

Factorials

n! = n(n − 1)(n − 2) … × 1

On page 20 of the log tables — read it off, don’t memorise.

Most recent exam questions

  • 2026 P2 Q3(b)(i)
  • 2025 P2 Q10(b)(ii)
  • 2023 P2 Q3(a)(i)
  • 2022 P2 Q7(d)
  • 2018 P2 Q3(a)(i)

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