0.0055
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7/21 is 1/3 in its simplest form (divide both by 7)
There are twelve possible ways to multiply whole numbers for a product of 72 (excluding different arrangements of the same numbers), of which eight combinations do not repeat any factors:1×1×72 = 721×2×36 = 721×3×24 = 721×4×18 = 721×6×12 = 721×8×9 = 722×2×18 = 722×3×12 = 722×4×9 = 722×6×6 = 723×3×8 = 723×4×6 = 72
7% of 721 = 50.47
375 +346 = 721
672 + 49 = 721