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edited Jun 17, 2020 at 9:04

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edited Jun 17, 2020 at 9:04

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#Dyalog APL, 15 bytes

Dyalog APL, 15 bytes

(+/÷⍴)∘∊1=⍳∘.∨⍳

Pretty straightforward. It's a monadic function train. Iota is the numbers from 1 to input, so we take the outer product by gcd, then count the proportion of ones.

#Dyalog APL, 15 bytes

(+/÷⍴)∘∊1=⍳∘.∨⍳

Pretty straightforward. It's a monadic function train. Iota is the numbers from 1 to input, so we take the outer product by gcd, then count the proportion of ones.

Dyalog APL, 15 bytes

(+/÷⍴)∘∊1=⍳∘.∨⍳

Pretty straightforward. It's a monadic function train. Iota is the numbers from 1 to input, so we take the outer product by gcd, then count the proportion of ones.

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answered Dec 27, 2015 at 4:47

lirtosiast

answered Dec 27, 2015 at 4:47

lirtosiast

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#Dyalog APL, 15 bytes

(+/÷⍴)∘∊1=⍳∘.∨⍳

Pretty straightforward. It's a monadic function train. Iota is the numbers from 1 to input, so we take the outer product by gcd, then count the proportion of ones.