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请教几道机警题
这几题帮忙看一下好么
X^A=Y^B=Z^C,X,Y,Z均为正整数,A,B,C均为大于1的整数,求X+Y+Z
(1)X^A=729
(2)A+B+C=11
80. 60 cars, either full-size or midsize or compact. 31 is white, 10 is red, 19 is blue, how many cars are full-size?
(1). No red and no blue cars are full-size.
(2). The number of full-size is greater than the sum of midsize and compact cars.
85. DS:一个数列,平均数与和的比
(1)共有8个数
(2)和为100
95. 【旧机经】有十个球,一个绿,一个蓝,依次取三个球不放回,求第一个是绿,其它二个不是蓝的概率
104.一道数据充分性的题目:a,b ,为正整数。求B=?
A:14A+B=86
B:B小于14。
122. x^2+bx+16 ,问B=?
A,B>0
B,x^2+bx+16=(x+C)^2 |
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