Here n is itself a single-digit positive natural number.

The magic number is a capital P followed by a single-digit number.

All Jeter knows is that he has one of two remaining single-digit numbers.

Doubling of a single-digit number has occasionally been used for players whose numbers were unavailable.

When a camera maker chooses to identify a model with a single-digit number, you know it must be something special.

The process continues until a single-digit number is reached.

It wasn't an accident that the Yankees gave him a single-digit number.

Ten symbols, another single-digit number, and so on, pages of it.

Eight is the single-digit number that can be divided by two the greatest number of times.

Nine is the highest single-digit number in the decimal system.