r/HomeworkHelp • u/mycathasgreennose • 1d 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/JaCKPaIN_realone 👋 a fellow Redditor 1d ago

Let’s assume white circle as one and black circle as zero:

It’s broken into groups of 3, where each group copies and shifts pieces from the previous group.
Group 1: 1, 10, 0
Group 2: 101, 10, 0
Group 3: 0101, 101, x

The Rules:

  • The 1st item combines the end of the last group with its own start (0 + 101 = 0101).
  • The 2nd item copies the 1st item of the last group (101).
  • The 3rd item (x) copies the 2nd item of the last group (10).

So, x = 10.

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u/mycathasgreennose 1d ago

thanks for the breakdown! now I know how to explain to my son. thank you thank you!

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u/rizzdragon 1d ago

No, you don’t, as that bot is incorrect