He has has ten patterns of chairs and eight patterns of tables
Hence, A chair can be arranged in 10 ways and
A table can be arranged in 6 ways
Hence one chair and one table can be arranged in 10 x 6 ways = 60 ways
An design manager has 10patterns of chairs & 6patterns of tables. In how many ways can he make a pair of table & chair?
(a) 20
(b) 60
(c) 80
(d) 90
(e) 100