Which one of the following CANNOT be the product that is advertised during two of the weeks?

Jordunn March 13, 2021

How can K be ruled out?

I understand how G is correct, but I don't understand how K is incorrect. The second rule states the repeated product is advertised during week 4 but rule number four states that K is advertised during week 1 or 2 and so therefore it cannot be the repeated product.

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Victoria April 3, 2021

Hi @Jordunn,

Happy to help!

We know that K is advertised during one of the first two weeks, but this does not mean that K is ONLY advertised during one of the first two weeks.

Notice that the following example meets all of our conditions:

1: K H
2: G J
3: O L
4: K M

1) J is advertised during Week 2. H is advertised during the immediately preceding week: Week 1.

2) K is the product that is advertised during two of the weeks. It is advertised during Week 4 and Week 1, not Week 3.

3) G is advertised during Week 2. J is also advertised during Week 2.

4) K is advertised during one of the first two weeks: Week 1.

5) O is one of the products advertised during Week 3.

Hope this helps! Please let us know if you have any further questions.