Question

The question is based on a set of conditions. Choose the response that most accurately and completely answer the question.

There are five flagpoles lined up next to each other in a straight row in front of a school. Each flagpole flies one flag (red, white, or blue) and one pennant (green, white, or blue). The following are conditions that affect the placement of flags and pennants on the poles: On a given flagpole, the pennant and the flag cannot be the same colour. Two adjacent flagpoles cannot fly the same colour flags. Two adjacent flagpoles cannot fly the same colour pennants. No more than two of any colour flag or pennant may fly at one time.

If the 2nd flag is red and the 3rd flag is white, and the 4th pennant is blue, then which one of the following must be true?

Options

• If the 5th flag is white, then the two of the pennants are blue.

• If the 1st flag is white, then the 2nd flag is white.

• If the 1st pennant is blue, then the 5th pennant is green.

• It the 1st pennant is green, then the 5th flag is not blue.

Answer 1

If the 5th flag is white, then the two of the pennants are blue.