2025 IGCSE Additional Mathematics October/November 0606/23 Q5

2025 IGCSE Additional Mathematics October/November 0606/23 Q5

6 marks

Six different digits are chosen from the nine digits 1, 2, 3, 4, 5, 6, 7, 8, 9.

These digits are used to form a 6-digit number.

Find how many 6-digit numbers can be formed in the following cases.

  1. There are no restrictions.[1]
  2. The number is greater than \(700\,000\).[2]
  3. The number is greater than \(750\,000\).[3]

Solution:

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Answer:(a) \(60\,480\) (b) \(20\,160\) (c) \(16\,800\)

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