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goldfiish [28.3K]
3 years ago
13

If a, b, c, and d are replaced by four distinct digits from 1 to 9, inclusive, then what's the largest possible value of the dif

ference a.b - c.d ?
SAT
1 answer:
Vladimir79 [104]3 years ago
8 0
Maximize ab-cd.
So, we want to make ab as large as possible and cd as small as possible.

ab = 9*8 (the two biggest allowed) = 72
cd = 1*2 (the two smallest allowed) = 2

72 -2 = 70

hope this helps :)
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