Time Hair Height Transport
11:45 Gray 5'11" Roller-Skating
11:55 Red 5'7" Skateboarding
12:05 Black 6'9" Running
12:15 Brown 6'2" Walking
12:30 Blonde 6'6" Biking
First, let's list everything we're looking for.
The times that the men were seen were at 11:45, 11:55, 12:05, 12:15, and 12:30.
The men's heights were, in order, 5'7", 5'11", 6'2", 6'6", and 6'9".
They had black, gray, red, blonde, and brown hair, and were seen biking, running, walking, roller-skating, and skateboarding.
Now, let's get to work:
The skateboarder didn't come at 11:45, 12:15, or 12:30 (3), nor at 12:05 (4); he came at 11:55.
Time Hair Height Transport
11:45
11:55 Skateboarder
12:05 Running
12:15
12:30
The gray-haired man came before the skater at 11:45; the 6'9" man came directly after at 12:05, and the brown-haired man after him at 12:15 (3).
Time Hair Height Transport
11:45 Gray
11:55 Skateboarder
12:05 6'9" Running
12:15 Brown
12:30
The 6'6" man was blonde (4) and did not come at 11:45 or 11:55 (2), or at 12:05 (the 6'9" man did) or 12:15 (5); he came at 12:30.
Time Hair Height Transport
11:45 Gray
11:55 Skateboarder
12:05 6'9" Running
12:15 Brown
12:30 Blonde 6'6"
The 6'9" man did not have gray, brown, or blonde hair, nor was it red (2); he had black hair (and, by elimination, the skateboarder had red hair).
Time Hair Height Transport
11:45 Gray
11:55 Red Skateboarder
12:05 Black 6'9" Running
12:15 Brown
12:30 Blonde 6'6"
The 6'6" blonde man was not walking (1), roller-skating (2), running (the black-haired man was), or skateboarding (the red-haired man was); he was biking.
Time Hair Height Transport
11:45 Gray
11:55 Red Skateboarder
12:05 Black 6'9" Running
12:15 Brown
12:30 Blonde 6'6" Biking
The man who was walking did not come at 11:55 (skateboarder), 12:05 (runner), or 12:30 (biker), or at 11:45 (1); he came at 12:15 and the roller-skater came at 11:45.
Time Hair Height Transport
11:45 Gray Roller-Skating
11:55 Red Skateboarding
12:05 Black 6'9" Running
12:15 Brown Walking
12:30 Blonde 6'6" Biking
The shortest man, at 5'7", did not come at 12:05 (the 6'9" man did) or 12:30 (the 6'6" man did); he was not the man at 12:15 (5) or the gray-haired man (5) at 11:45. He came at 11:55.
Time Hair Height Transport
11:45 Gray Roller-Skating
11:55 Red 5'7" Skateboarding
12:05 Black 6'9" Running
12:15 Brown Walking
12:30 Blonde 6'6" Biking
The 5'11" man was not walking (1), so he must be the gray-haired roller-skater at 11:45, and the walker is 6'2".
So, the completed table looks as follows:
Time Hair Height Transport
11:45 Gray 5'11" Roller-Skating
11:55 Red 5'7" Skateboarding
12:05 Black 6'9" Running
12:15 Brown 6'2" Walking
12:30 Blonde 6'6" Biking
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