card(A∪B∪C)=card(A)+card(B)+card(C)-card(A∩B)-card(A∩C)-card
card(A∪B∪C)=card(A)+card(B)+card(C)-card(A∩B)-card(A∩C)-card
集合中card(A∪B∪C)≤min{card(A∩B),card(B∩C),card(C∩A)}什么意思
card(A∪B)=card(A)+card(B)-card(A∩B)
关于容斥原理:给我解释一下card(A并B 并C 并D)=card(A)+card(B)+card(C)+card(D)
有限集合P中元素的个数记作card(P).已知card(M)=10,A⊆M,B⊆M,A∩B=∅,且card(A)=2,c
Can you bring ( ) to me?A.some books B.a ID card C.some thin
Here ( )a card A:has B:is C:are Can you help kids with ____(
已知card(A)=n,card(C)=m(n
有限集合S中元素的个数记作card(S),A⊆B的必要条件是card(A)≤card(B)为什么是真命题
card(A并B)=card(A)+card(B)-card(A交B),其中card(A并B)的意义是什么?
Can you __?A.show your card me B.show me your card C.show to
Tony usually ()a birthday card.