Question

200以内不是2的倍数，不是3的倍数，不是5的倍数，不是7的倍数，这样的数共有几个

Answer 1

11,13,17,19,23,29,31,37,41,43,47,59,61,67,71,73,79,83,89,97,101,103,107,109,127,133,137,141,143,151,157,161,163,169,173,177,179,181,187,191,193,197,199,49个。