1) HCF of 18 and 24 a) 2 b) 6 c) 12 d) 18 2) LCM of 5 and 7 a) 35 b) 70 c) 12 d) 24 3) Which is a prime number? a) 66 b) 21 c) 19 d) 51 4) Sort into Prime / Composite: 17, 29, 15, 49 a) Prime: 29; Composite: 17, 15, 49 b) Prime: 17, 15; Composite: 29, 49 c) Prime: 17, 29; Composite: 15, 49 d) Prime: 15, 17; Composite: 29, 49 5) Prime factors of 36 a) 2, 2, 3, 3 b) 2, 3, 6 c) 2, 2, 2, 3 d) 3, 3, 6

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