55C6 = 28,989,675
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55C6 = 28,989,675
It is: 55C6 = 28,989,675
6 of them.
654321-100000= 554321 combinations
2 to the 7th power = 128 * * * * * No. That is the total number of combinations, consisting of any number of elements. The number of 2 number combinations is 7*6/2 = 21