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Henry Bushby Transcription Pages

VM533B94v6_228.jpg

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228 Summary of Formulae (Plaits)
(5) n & y given: find z
Ans: z = GCM of n & y/(n-1), or if
(is correct.)[checkmark] no GCM of n & y, z = 1.
or, no GCM of n & y/(n-1), z = 1
(6) y given, z = 1: Find values of n.
(i) Set out measures of y from 1 to
y inclusive.
(ii) Augment them ^all by 1.
(iii) Strike out augmented measures
which are multiples ^or equals of unaugmented
measures greater than 1.
(iv) Remaining augmented measures
= values of x.
(6) y given, z = given no. exceeding 1. Find values
of n.
(i) Set out measures of y
less than y from 1 onwards inclusive.
(ii) Augment them all by 1.
(iii) Strike out augmented measures
indivisible by z.
(iv) Remaining augmented measures =
values of n.

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