Counting & Binomials
Review question

Given the digits $1$ to $5$, how many odd numbers can we make?
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Ref: R9323
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Suggestion

  1. how many of the numbers are divisible by 4.

Can we think of a rule to check whether or not a number is divisible by \(4\)?

Does looking at the last digit work?

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UCLES O level Additional Mathematics 1, QP 471/1, 1968, Q1

Question reproduced by kind permission of Cambridge Assessment Group Archives. The question remains Copyright University of Cambridge Local Examinations Syndicate (“UCLES”), All rights reserved.

 Last updated 18-Oct-16
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