so it seems possible to unlock this lock but like I say we need proofs to prove that this is possible. Can you show the detail explanation? Thank you :confused:
What do you mean by changing only key C2:smile:?
My opinion: there is no way to unlock it because the diagram of the lock is not given and we can't just predict the way we want. Also, the question just said the 4*4 grid with some keys are vertical and horizontal, we can't find a unique way to...
Homework Statement
1. A grasshopper sitting on the number line can jump p or q inches right or left. Find all points on the line the grasshopper can reach starting from the origin (i.e. at zero).
2.Say exactly eight people show up to your birthday party, where there are two types of...
Homework Statement
1.During a certain movie, each person of a set of five audience members fell asleep exactly twice. For each pair of these people, there was some moment when both were sleeping simultaneously. Is it true that, at some moment, three of them must have been sleeping...