【解答】
Ⅱ [出典:Chrisian, B. & Griffiths, T. (2016). Algorithms to Live By: The Computer Science of Human Decisions, William Collins.]
(1) b (all the numbers that are multiples of)
(2) a (remain at the end are the primes)
(3) c (multiply primes together than to factor them)
(4) d (can be done in a fraction of)
(5) b (get multiplied together to create huge composite)
【語句】
・multiple 倍数
・prime (number) 素数
・factor ~を因数分解する
・composite number 合成数(1とその数自身以外の約数を持つ数)
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