1.   What is the greatest common factor of 22, 66, and 110?
    A. 2 B. 66
    C. 11 D. 22
    Hint

  2.   What is the greatest common factor of 25a2b and 5ab2?
    A. 5ab B. 5ab2
    C. 5a2b2 D. 5
    Hint

  3.   What is the greatest common factor of 16x2 and 12x?
    A. 16x2 B. 12x
    C. 4x D. 4x2
    Hint

  4.   What is the greatest common factor of 64 and 40?
    A. 20 B. 8
    C. 4 D. 2
    Hint

  5.   What is the greatest common factor of 20x2 and 32x3?
    A. 4x2 B. 8x3
    C. 4x D. 8x
    Hint



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