difficult problem
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“It’s a notoriously difficult problem for classical computers,” Chow explained.
From Barron's • Jan. 29, 2026
“It’s a difficult problem to solve, and California is kind of solving it in real time.”
From Los Angeles Times • Nov. 26, 2025
That problem of coordinating people's attention at the same time to do X is a difficult problem.
From Salon • Mar. 22, 2025
"That most difficult problem is that each nuclear power plant is in a different location and will need its own safety protocol and infrastructure," Yamagiwa said.
From BBC • Feb. 18, 2025
It ticked in a satisfied and self-important way, as if it had managed to solve some difficult problem.
From "Raymie Nightingale" by Kate DiCamillo
