Contact us
Choose a category below so we can get back to you as quickly as possible.
其中必有兩個數的和是52?這裡應該錯了,不是52 52,=29+23=27+25只有兩組個數的和為52,還有11個數,任取取9個數都不會有滿足兩個數的和為52.應為32這個題就是抽屜原理的應用32= 29+3 =27+5 =25+7 =23+ 9 =21+11 =19+13…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.