problem solving
US /ˈprɑː.bləm ˌsɑːlv.ɪŋ/
UK /ˈprɑː.bləm ˌsɑːlv.ɪŋ/

1.
the process of finding solutions to difficult or complex issues
:
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Effective problem solving is crucial for success in any field.
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The team worked together on a complex problem-solving task.