In-a-certain-set-of-200-students-subset-A-are-blondes-and-the-rest-are-brunettes-B-are-left-handed-and-C-are-left-handed-blondes-1-Express-in-terms-of-A-B-C-the-subset-consisting-of-right-han

Question Number 125645 by aurpeyz last updated on 12/Dec/20

I n a c e r t a i n s e t o f 200 s t u d e n t s .

s u b s e t A a r e b l o n d e s a n d t h e r e s t a r e

b r u n e t t e s . B a r e l e f t h a n d e d . a n d

C a r e l e f t - h a n d e d b l o n d e s .

(1) E x p r e s s i n t e r m s o f A B C t h e

s u b s e t c o n s i s t i n g o f r i g h t - h a n d e d

b r u n e t t e s .

(a) A \cup B \cap C (b) A^{1} \cap B^{1} (c) (A \cup B)

(d) A \cup B - C

(2) i f A c o n t a i n s 80 s t u d e n t s

B c o n t a i n s 24 a n d C c o n t a i n s 10 .

h o w m a n y r i g h t h a n d e d b r u n e t t e s

a r e t h e r e ?