Solution:

According to the question, there are two routes from Goa to Bombay which is air and sea. So, the number of ways in which a person can travel from Goa to Bombay is given by ²C₁

According to the question, there are three routes from Bombay to Delhi: air, rail, and road. So, the number of ways in which a person can travel from Bombay to Delhi is given by ³C₁

Therefore, the number of ways in which a person can travel from Goa to Delhi via Bombay is given by:

²C₁ × ³C₁ = 2 × 3

²C₁ × ³C₁ = 6 ways.