Question 1
A number that does not divide exactly by 2........
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A number that has no factors except itself and 1........
[1]
Write down all the multiples of 4 between 21 and 29.
[1]
Write down a common multiple of 4 and 6.
[1]
Insert brackets to make this calculation correct.
4 - 1 × 2 = 6
[1]