2. Which list includes all factors of 40 ? (A) \( 1,2,4,10,20,40 \) (B) \( 1,2,4,5,8,10,20,40 \) (C) \( 1,2,4,5,6,8,10,20,40 \) (D) \( 1,2,3,4,10,12,20,40 \)
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The Deep Dive
To find all the factors of 40, we need to identify all the numbers that can be multiplied together to get 40. The factors of 40 are \( 1, 2, 4, 5, 8, 10, 20, \) and \( 40 \). Out of the options given, the correct list that includes all the factors of 40 is (A) \( 1, 2, 4, 10, 20, 40 \). However, it is missing 5 and 8, so let's see if we can identify another list that meets the criteria. The complete list of factors of 40 is \( 1, 2, 4, 5, 8, 10, 20, 40 \). Option (B) \( 1, 2, 4, 5, 8, 10, 20, 40 \) contains all these factors correctly! So, the answer is (**B**).