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一、一元选择题: 1.在自然数1,2,3,…,100中,能被2整除但不能被3整除的个数是( )。 (A)34 (B)35 (C)36 (D)以上都不是 2.在由两个不同数字组成的所有两位数中,每个两位数被其两个数位上数字之和除时,所得的商的最小值是( ) (A)1.5 (B)l.9 (C)3.25 (D)4 3.x表示一个两位数,y表示一个三位数,若把x放到y的左边,组成一个五位数,那么这个五位数表示为( )。 (A)x+y (B)1Ox+y (C)1OOx+y(D)1OOOx+Y
First, one-dimensional multiple-choice questions: 1. In natural numbers 1, 2, 3,..., 100, the number that can be divisible by 2 but not divisible by 3 is (). (A)34 (B)35 (C)36 (D) None of the above is 2. In all two-digit numbers consisting of two different numbers, each two-digit number is divided by the sum of the numbers in its two digits. The minimum value of the resulting quotient is () (A)1.5 (B)l.9 (C)3.25 (D)4 3.x represents a two-digit number, y represents a three-digit number, if you put x into y On the left, make up a five-digit number, then the five-digit number is (). (A) x+y (B) 1Ox+y (C) 1OOx+y (D) 1OOOx+Y