Which weight is the last in a sequence after W1 and W2?

In the given sequence after W1 and W2, the next logical weight to follow would typically be W3, which is a common progression in sequences where the weights increase numerically. Following that logic, the weights would continue in a natural ascending order: W1, W2, W3, W4, W5, W6.

W5 would come after W4 in this sequence, making it a reasonable choice for the last weight if the question is inquiring about the next weight after the initial two. However, given the regularity of numerical sequences, one can argue that W6 is indeed the final weight that would come last in an orderly progression following W1, W2, W3, W4, and W5.

Thus, considering the structure of a sequence where numerical order is maintained, W5 is thought of as the last weight in a specific context where the inclusion of W3 and W4 may not be questioned.