单选题 A computer is programmed to generate a list of multiples of prime numbers 2,3 and 5, as shown below:
Program 1—List multiples of 2
Program 2—List multiples of 3
Program 3—List multiples of 5
How many integers less than 100 will appear on all of the lists of programs produced above?

【正确答案】 C
【答案解析】[解析] 此题目也即问在小于100的整数中有多少数同时是2，3，5的倍数。因为2，3，5互质，所以小于100的2，3，5的公倍数为30，60，90。