How to find combinations of letters?

Questions
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1

Hello everyone,

I am required to find the list of all the combinations of certain length of letters. I found the Permutations function but I did not find any function for finding the list of combinations. Please help me. I am a new user of Mathematicia. Thank you.

Regards,
Azhar Uddin Mohammed

2

Perhaps make use of the Subsets function? For example, here are the subsets of the list {a, b, c, d} of exactly length 2

In[1]:= Subsets[{a, b, c, d}, {2}]

Out[1]= {{a, b}, {a, c}, {a, d}, {b, c}, {b, d}, {c, d}}
3

Thank you sir. It worked. :slight_smile: