400-1816-180
本題由lindy提供
If △ and □ represent single digits
(A) 7
(B) 9
(C) 10
(D) 11
(E) 13
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答案：
B
以上可以
2+正方形+6=個(gè)位為2的數(shù) 所以正方形可以等于3 因?yàn)楦魑贿€進(jìn)了個(gè)1
4+三角形+1+1=12 三角形=6
所以三角形+正方形=9
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