lw_rebeldom 发表于 2008-10-3 11:47:53

两道题目请教下

1.In a certain deck of cards,each cards has a positive integer written on it. In a multiplication game,a child draws a card and multiplies the integer on the card by the next larger integer.If each possible product is between 15 and 200,then the least and greatest integers on the cards could
a 3 and 15
b 3 and 20
c 4 and 13
d 4 and 14
e 5 and 14
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