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Q14: Question – Paper 2 – June 2019
Q14: Question – Paper 2 – June 2019
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Question
14)
Ali and Mel are making 3-digit codes.
The digit 0 is not used.
a) Ali can make x more codes than Mel.
Assume that digits cannot be repeated.
Work out the value of x.
Ali and Mel are making 3-digit codes.
The digit 0 is not used.
- Ali only uses odd digits.
- Mel only uses even digits.
a) Ali can make x more codes than Mel.
Assume that digits cannot be repeated.
Work out the value of x.
[3 marks]
b) In fact, digits can be repeated.
What does this tell you about the actual value of x?
Tick one box.
[1 mark]