計算:1111111111×9999999999=?
(A)12345678890123456789
(B)99999999999999999999
(C)11111111108888888889
(D)11011011018989898989。
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統計: A(68), B(54), C(273), D(66), E(0) #377339
統計: A(68), B(54), C(273), D(66), E(0) #377339
詳解 (共 2 筆)
#922957
1111111111×9999999999
=1111111111×(10000000000-1)
=11111111110000000000-1111111111
11111111110000000000
-) 1111111111
11111111108888888889
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