How many 3 digit combinations can I get using the numbers 1 to 10, without repeating digits or combinations? Eg. 321 would be a repeat of 123. Is there a formula/program to
Combination - Wikipedia
Number of possible combinations in orgnaisms with 1 to 19 chromosome pairs in pre-synaptic cells. | Learn Science at Scitable
Lesson 11-1 Permutations and Combinations - ppt download