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Alternative spelling of 組合せ数学 (“combinatorics”)
Combinatorics is a branch of mathematics that studies combinations of things.
combinatorics
Combinatorics is a branch of mathematics dealing with issues of order and choice.
(informal) no problem
No problem, I will do that job.
unthinkable, out of the question
That proposal is completely unthinkable.
practical question (problem)
As a practical question, how are we going to fund this project?
set of problems
A new approach is needed to solve this set of problems.
problem; point at issue
The main problem with this project is the lack of communication.
text that makes up a question/problem
This question text is too difficult, it's hard to understand.
matter of life or death / (idiomatic) an extremely urgent matter
This exam is a matter of life or death for me.
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