A home cooking equipment supply company employs 7 sales repr

A home cooking equipment supply company employs 7 sales representatives and 6 product designers. How many ways can this company select 4 of these employees to send to a product demonstration convention in Oahu if at least 3 product designers must attend? 168 155 504 42

Solution

Solution:

Since we have to create group of 4 people out of 7 sale person and 3 product designers

it given that at least 3 product designers must attend

therefore ways to select person = wasy to selecr 4 Person only from product design + ways to select 3 person from design x 1 person from sales

= 6C₄ + 6C₃ x 7C₁

= 15 + 140

= 155

Option B is correct