Câu hỏi:
In the same way you can make four fives in an equation to equal 100, (5+5)X(5+5)=100, can you make an equation with only four sevens and no other digits to make 100?
Đáp án:
(7/.7)X(7/.7)=100 As 7/.7 = 10 The equation becames equivalent to 10X10
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