Hi all, Please help me understand for this question why 7^77/5 used a pattern recognition of 2,4,3,1 and not 7,9,3,1 if our unit digit was 7?

Thanks!

Hi all, Please help me understand for this question why 7^77/5 used a pattern recognition of 2,4,3,1 and not 7,9,3,1 if our unit digit was 7?

Thanks!

Can you post a picture of the full question?

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Youâ€™re right that the pattern for 7 is 7,9,3,1

However we need to remainder pattern:

7/5 â†’ remainder 2

9/5 â†’ remainder 4

3/5 â†’ remainder 3

1/5 â†’ remainder 1

Does this help?

So I just need to subtract the pattern number by the denominator and if a number doesnâ€™t have a remainder the pattern number is the â€śremainderâ€ť?