Counting independent routes (fundamental principle of multiplication): Compute total ways across segments. Routes known: Bristol → Birmingham: 4 routes Birmingham → Sheffield: 3 routes Sheffield → Carlisle: 2 routes Assuming independence, find total Bristol → Carlisle routes. Choose the correct value.

Q: Counting independent routes (fundamental principle of multiplication): Compute total ways across segments. Routes known: Bristol → Birmingham: 4 routes Birmingham → Sheffield: 3 routes Sheffield → Carlisle: 2 routes Assuming independence, find tot…

Concept When choices are independent across stages, multiply the counts. Calculation Total routes = 4 × 3 × 2 = 24.

Difficulty: Easy

Correct Answer: 24

Explanation:

Concept
When choices are independent across stages, multiply the counts.

Calculation
Total routes = 4 × 3 × 2 = 24.

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