Question

A doctor must see six patients--C, D, E, F, G, and H--one after another, not necessarily in that order. The patients must be seen according to the following conditions:

E is seen exactly three patients after C.
D is seen immediately before F is seen.

If G is seen third, which one of the following must be true?
a) C is seen first.

b) D is seen fourth.

c) F is seen second.

d) H is seen fifth.

Answer 1

To determine the order of the patients, we can use the given conditions to create a logical sequence. Using the conditions, we find that C must be seen first.

Step-by-step explanation:

To determine which one of the given options must be true, we can use the given conditions to create a logical sequence of the six patients. Let's analyze the given conditions:

1. E is seen exactly three patients after C.
2. D is seen immediately before F is seen.
3. G is seen third.

From the third condition, we know that G is seen third. Using the second condition, we can deduce that F must be seen fourth. Using the first condition, we can deduce that C must be seen first and E must be seen fourth. Therefore, the correct answer is C is seen first.