If Henry's lesson is scheduled for a day either immediately before or immediately after Tom's lesson, then Grace's le...

alexac123 March 29, 2022

Ordering

I am confused as to how Tom could be a viable option for the second day based on this question. If the order could go: H T J G __ there would not be enough spaces to include the order of S>U. Please help me understand if I am misinterpreting this because I used a rule suggested in the previous question!

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Emil-Kunkin March 30, 2022

Hi @alexac123,

I think that H must come after J, so H can't be first. There are only two possible locations for J (1 and 3), but since h and t must be next to each other, we can have J in 3.

If we tried
_ _ J H S U we wouldn't have enough room for h to be next to t.

Therefore J must be first. This means G must be second in order to have room for the SU order.