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  3. 1 3 we call a number r a perfect square...

Question: 1 3 we call a number r a perfect square...

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1. (3) We call a number r a perfect square if there is some n e Z so that z n2 We call perfect squares consecutive if they are the squares of consecutive integers. For example, we would call 9 and 16 consecutive perfect squares, since 9 = 32 and 16 = (3 + 1)2. Prove or disprove: The difference of any two consecutive perfect squares is odd. 2. (2) Prove that if dla and djb then d (ar + by) 3. (2) How many seven-digit phone numbers begin with 234- and contain no 0s? Remember to explain your answer
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