传统24点问题只有分数解（计算中间过程出现分数）的组合：
共18种：
1346 f 6/(1-3/4)
1456 f 4/(1-5/6)
1555 f (5-1/5)*5
1668 f 6/(1-6/8)
18QQ f Q/(Q/8-1)
22JJ f (2/J+2)*J
22KK f (2-2/K)*K
235Q f Q/(3-5/2)
24TT f (4/T+2)*T
255T f (5-2/T)*5
277T f (T/7+2)*7
3377 f (3/7+3)*7
3388 f 8/(3-8/3)
4477 f (4-4/7)*7
459J f (9/J+4)*5
477Q f (4-7/Q)*7
557J f (7-J/5)*5
577J f (5-J/7)*7
共18种：
1346 f 6/(1-3/4)
1456 f 4/(1-5/6)
1555 f (5-1/5)*5
1668 f 6/(1-6/8)
18QQ f Q/(Q/8-1)
22JJ f (2/J+2)*J
22KK f (2-2/K)*K
235Q f Q/(3-5/2)
24TT f (4/T+2)*T
255T f (5-2/T)*5
277T f (T/7+2)*7
3377 f (3/7+3)*7
3388 f 8/(3-8/3)
4477 f (4-4/7)*7
459J f (9/J+4)*5
477Q f (4-7/Q)*7
557J f (7-J/5)*5
577J f (5-J/7)*7
