Here’s our main diagram. We have two G’s. We need 5. So you need to think about how to put 3 more G on the diagram. For any two spaces such as 7 and 9 or 8 and 10, at most one of them can be green.
So we can put one green in 7-9, one in 8-10, and one in 2.
Store 8 can’t be green, because 6 is green. But we can make store 10 green.
In any two spaces, like 7 and 9, you can only put one G. Here, we can make 7 green. 9 won’t work, because 10 is green.
9 has to be red, because store 5 used up the yellow in the top row.
We have four G so far. For the fifth G, we must make store 2 green.
We also need to put one Y in the bottom row. That will have to go in store 8.
E is CORRECT.
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