Q 1: Ö(1917) = Ö19  Ö17, is this correct? Yes No

Q 2: Ö225  Ö121 = ____? 4 4

Q 3: Ö169  Ö225 = _____? 2 2

Q 4: Ö19  Ö15 = Ö(1915), is this correct? Yes No

Q 5: Ö225  Ö169 = Ö(225169), is this correct? Yes No

Q 6: Ö81  Ö9 = _____? 6 6

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Question 8: This question is available to subscribers only!

