Question 37
Back to Exercise
A courier moves from A to B along the streets shown, always going right or up.
How many shortest routes from A to B pass through P?
- A 56
- B 26
- C 30 Correct
- D 13
Correct Answer: Option C
A to P: 2 rights, 1 up → 3C1 = 3
P to B: 3 rights, 2 ups → 5C2 = 10
3 × 10 = 30
Trap: 13 adds the two parts.
Answer: 30
Discussion & Comments 0
Share your method, a shortcut, or ask about a step you didn't follow.
No comments yet. Be the first to share your solution!