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secondary 4 | E Maths
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No.3c 3d..
Question 3.c
= {x:x is even number and 10《x《 20}
C={x:x is a number that can be divided exactly by 3}
Question 3.d
={x:x is an odd number and 1《x《8}
D={x:x It's a factor of 12}
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