Answer:
252
Explanation:
the answer is 12 x 1 + 12 x 2 + 12 x 3 + 12 x 4 +12 x 5 +12 x 6= 252
12 x 1 + 12 x 2 + 12 x 3 + 12 x 4 +12 x 5 + 12 x 6 = 252
12 + 24 + 36 + 48 + 60 + 72 = 252
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