Function to return the count of numbers from 1 to N which are not divisible by any number in the range [ 2 , 10 ]
def countNumbers ( n ) : NEW_LINE INDENT return ( n - n // 2 - n // 3 - n // 5 - n // 7 + n // 6 + n // 10 + n // 14 + n // 15 + n // 21 + n // 35 - n // 30 - n // 42 - n // 70 - n // 105 + n // 210 ) NEW_LINE DEDENT