24点# Joke - 肚皮舞运动l*f2018-01-22 08:011 楼2/3 (it's a fraction, don't ask me why) 4, 7 and 8First correct answer gets a double yoke bun!
z*e2018-01-22 08:013 楼pretty straight-forward cuz only 8 is cube of some integer【在 z*********e 的大作中提到】: 8^(2/3) *7 -4
H*g2018-01-22 08:014 楼双轭包【在 l*f 的大作中提到】: 2/3 (it's a fraction, don't ask me why) 4, 7 and 8: First correct answer gets a double yoke bun!
l*f2018-01-22 08:016 楼Hence the joke board ...Anyway, double yolk bun sent.【在 H********g 的大作中提到】: 双轭包
d*o2018-01-22 08:017 楼还是按一贯思路((8/(2/3))/(7-4))!【在 l*f 的大作中提到】: 2/3 (it's a fraction, don't ask me why) 4, 7 and 8: First correct answer gets a double yoke bun!
B*y2018-01-22 08:019 楼哪需要那么麻烦,(I(2/3)+I(4)+I(7)+I(8))!,I为indicator function,=1如果为实数,否则=0.【在 d****o 的大作中提到】: 还是按一贯思路: ((8/(2/3))/(7-4))!
H*g2018-01-22 08:0110 楼你这是算24的通解吧【在 B******y 的大作中提到】: 哪需要那么麻烦,(I(2/3)+I(4)+I(7)+I(8))!,I为indicator function,=1如果为实: 数,否则=0.
d*o2018-01-22 08:0111 楼Indicator function 要跟定义的集合才能用,跟运算符还是有一些不同【在 B******y 的大作中提到】: 哪需要那么麻烦,(I(2/3)+I(4)+I(7)+I(8))!,I为indicator function,=1如果为实: 数,否则=0.