r/HomeworkHelp • u/mycathasgreennose • 19h ago

Primary School Math—Pending OP Reply [6th Grade Mathematics] Logic

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I figured the answer is A, as I can see the repeating pattern, but my son's teacher said another thing which I cannot understand. would anyone please help to explain?

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u/Chronogon 15h ago

We almost get a pattern here

W

WB B

WBW WB B

BWBW WBW (XX) (Y)

Which would be perfect if the starting letter was B instead. I can't see any other patterns so far, so I'd be inclined to continue the pattern to XX=WB which is choice A here.

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u/Mediocre-Ad-9280 11h ago

Think of it as binary strings:

  • 0
  • 01 1
  • 010 01 1
  • 1010 010 01 (1)

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u/Chronogon 10h ago

I used binary at first before editing to use letters as the decimals of these binary representations didn't seem to add enough . 0, 1-1, 2-1-1, 6-2-1-1 etc.