# Study the pattern : 1 8 + 1 = 9                       1234 8 + 4 = 9876 12 8 + 2 = 98                   12345 8 + 5 = 98765 123 8 + 3 = 987                Write the next two steps. Can you say how the pattern works? (Hint: 12345 = 11111 + 1111 + 111 + 11 + 1).

123456 8 + 6 = 987648 + 6 = 987654

1234567 8 + 7 = 9876536 + 7 = 9876543

Yes, the pattern works.

As 123456 = 111111 + 11111 + 1111 + 111 + 11 + 1,

123456  8 = (111111 + 11111 + 1111 + 111 + 11 + 1) 8

= 111111 8 + 11111 8 + 1111  8 + 111 8 + 11 8 + 1  8

= 888888 + 88888 + 8888 + 888 + 88 + 8

= 987648

And,

123456 8 + 6 = 987648 + 6 = 987648

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