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Mathematics college entrance examination question, can no one in the world work out this question? I asked n teachers, but none of them could do it completely.
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You can use the "Pique" theorem. S=a+b/2- 1
s= 16？ ; ? b 1= 16？ Then a 1=9.
B2= 12，a2= 1 1。
B3= 10，a3= 12。
Note: AD? The number of integer points on the line is 0, 1, 3bc? The same (? Excluding AB? , with CD? Endpoint)