急问几道GRE数学题!都是绿皮上的,本人数学不大好,185.20For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor the greatest? A.3,12 B.5,6 C.10,20 D.11,12 E.15
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急问几道GRE数学题!都是绿皮上的,本人数学不大好,185.20For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor the greatest? A.3,12 B.5,6 C.10,20 D.11,12 E.15
急问几道GRE数学题!
都是绿皮上的,本人数学不大好,
185.20
For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor the greatest?
A.3,12 B.5,6 C.10,20 D.11,12 E.15,30
275.34
If 1 is the greatest common divisor of the
positive integers a and b and if a/b-1=13/8.Then a+b=?
A.11 B 13 C20 D21 E29
158.30
Which of the following cannot be expressed
as the sum of either two or three consecutive positive integer?
A.17 B18 C42 D56 E65
266.17
If n is an integer,then the units digit of
n^2 cannot be?
A0 B2 C4 D5 E6
急问几道GRE数学题!都是绿皮上的,本人数学不大好,185.20For which of the following pairs of integers is the least common multiple of the integers minus their greatest common divisor the greatest? A.3,12 B.5,6 C.10,20 D.11,12 E.15
1\下面哪组整数的最小公倍数渐趋最大公约数的值最大?
2、如果1是a和b的最大公约数,并如果a/b-1=13/8,.
从a/b-1=13/8得出a/b＝21/8,又因为1是a和b的最大公约数,所以a＝21,b＝8.所以a+b＝29
3、下面哪个不能表示连续2或3哥正整数的和.
17=8+9,18=5+6+7,42＝13+14+15,65=32+33
4、如果n是整数,那么n^2的个位数不会是哪个?
你把0到9都想一遍,只有2不是