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Hi. I have seen the answers for BPP Revision Kit Q.40 Buryecs as well as Q.44 Keshi. For the swap arrangement in Q.40 (Buryecs) part (b) (i), and the swap arrangement in Q.44 (Keshi) part (a), please may I know what the differences between these two swaps are, as the workings seem very different from each other?
Thank you.
There is no difference between the two swaps (and the answers approach them in the same way, although there is more than one way of illustrating how a swap might be achieved even though the end result must obviously be the same).
I prefer the approach I show in my free lectures because I find it more logical.
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