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Make this number factor two and factor three 27（） 49（） 1（）0（） Can it be fast?
At the end is an even number, there is a factor of 2, all the bits of a single number can be divided by 3, there is a factor of 3, think about it, the answer is not unique
When calculating a division problem, Li Ming regards the divisor 62.7 as 627. The quotient obtained is 51.3 greater than the correct quotient. What is the divisor of this problem?
51.3/(10-1)=5.7
62.7/5.7=11
Number reasoning: 1.102,90,6,42, - 18, A.30 b.12 C.6 D.4 2.96,89,72,62,51, a.38 b.39 c.40 d.41
1, choose a, 2, a
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