Sentence examples for a harder problem from inspiring English sources

It's a harder problem.

The new cases present a harder problem.

That is a harder problem.

Structure is a harder problem to solve.

"It is a harder problem," Mr. Lovejoy said.

A harder problem is three coincident birthdays, which requires a group of 88 people.

That calculation requires measuring the x-rays' intensity and determining their phase, the relative timing--a harder problem traditionally solved by comparing the diffraction pattern from a pure crystal with one from a similar crystal in which heavy metal atoms substitute for some components of the crystal.

It was a hard problem then.

This is a hard problem.

In general that's a hard problem.

"This is a hard problem," she said.