Average life span of a star?

Answer 1

This is such a big range, it cannot be answered. There are stars that are so large that they livefor only millions of years.

Answer 2

The average life span of a star depends on its mass. Low-mass stars, like our Sun, can live for about 10 billion years. Higher-mass stars have shorter life spans, burning through their fuel faster and living for only millions of years.