1) Which of these are a prime numbers? a) 2 b) 4 c) 6 2) Which of these are a prime numbers? a) 21 b) 61 c) 51 3) Which of these are a prime numbers? a) 9 b) 3 c) 6 4) Which of these are a factor of 50? a) 25 b) 6 c) 30 d) 12 5) Which of these are a factor of 5? a) 2 b) 3 c) 1 6) Which of these are a factor of 67? a) 33 b) 34 c) 35 d) None 7) Which of these is not a square number? a) 121 b) 144 c) 132 8) Which of these is a square number? a) 4 b) 5 c) 6 9) Which of these is not a square number? a) 20 b) 25 c) 36 10) Which of these are a multiple of 1? a) 56 b) 15 c) 67 d) All of the above 11) Which of these are a multiple of 3? a) 33 b) 21 c) 86 12) Which of these are not multiple of 7? a) 14 b) 37 c) 28

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