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System Number – Refers to a bet on all the possible permutations of a 4-digit number, e.g. the number 1234 has 24 permutations
(1234, 2341, 3412, 4123…).

Direct Number – Refers to a bet on a specific set of 4-digit number.
e.g., 1234

What are ABCD, AABC, AABB, AAAB?
ABCD – 3867, AABC – 3346, AABB – 3355, AAAB – 5553

System ABCD
210 sets of system numbers
24 direct permutation numbers
5040 sets of direct numbers
50.4% of the 10,000 numbers

System AABC
360 sets of system numbers
12 direct permutation numbers
4320 sets of direct numbers
43.2% of the 10,000 numbers

System AABB
45 sets of system numbers
6 direct permutation numbers
270 sets of direct numbers
2.7% of the 10,000 numbers

System AAAB
90 sets of system numbers
4 direct permutation numbers
360 sets of direct numbers
3.6% of the 10,000 numbers

System AAAA
10 sets of system numbers
0 direct permutation number
10 sets of direct numbers
0.1% of the 10,000 numbers.

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