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## Henry Bushby Transcription Pages

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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.