1.Watch and think and find the number for the question mark(?).The answer is______.
1 2 1 4 1 3
4 3 3 2 2 4
2.Put the numbers 1 to 9 in the blank.You can use every number only once.
_______×_________=________×_________=________+________+_________+________+_________
又快又好的再加100财富值!
人气:231 ℃ 时间:2020-03-23 16:23:52
解答
1、10=1*4+2*3
11=1*3+2*4
所以?=1*2+3*4=14
2、3*8=4*6=1+2+5+7+9谢谢大师!还有最后一题:Find the regularity(规律)of the equality:a#b=(a×b)/(a-b).a#b=3,a=________,b=_______a=6,b=2需要过程吗嗯嗯。十分感谢!!!a#b=3等价于ab=3(a-b)等价于(3-b)(a+3)=9。由于a,b为正整数(题目可能漏了此条件)且a+3>0,所以3-b>0。所以3-b=1,a+3=9。即a=6,b=2。
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