一道数学题.(英文)
问题描述：
一道数学题.(英文)
In a hundred integers from 1 to 100,the number of those which are divisible by 2,3 and 5 simutaneously is( ).
A.2 B.3 C.4 D.5
写出为什麽啊..
答
B,求1到100中2,3,5的公约数
答案是30 60 90