...the economic problems of the inner city...
The main problem is unemployment...
He told Americans that solving the energy problem was very important...
I do not have a simple solution to the drug problem.
With mathematical problems, you can save time by approximating.
In some cases a problem child is placed in a special school...
She is afraid to contact the social services in case they are labelled a problem family.
'Can you repair it?' — 'No problem'...
If the property needs a new dishwasher, no problem, just put it on a credit card.
'I ought to think about going actually. If that's all right with you.' — 'Yeah. No problem.'...
If they don't want to speak to me, fine. No problem.