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How do we create a list pair from the below list

list1={11,12,13,14,15,16};

desired pair list

listpair={{11,11},{11,12},{11,13},...,{11,16},{12,12},{12,13},...,{12,16},{13,13},{13,14},...,{13,16},...,{16,16}}
monfneg
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1 Answers1

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Select[Tuples[list1, 2], #[[1]] <= #[[2]] &];

How about this?

user1337
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