A geologist is analyzing rock samples, each with a unique mineral composition. If there are $4$ distinct types of minerals in a sample, and she selects $2$ minerals at a time for analysis, how many different pairs of minerals can she choose? - Treasure Valley Movers
**A geologist is analyzing rock samples, each with a unique mineral composition. If there are 4 distinct types of minerals in a sample, and she
Apr 19, 2026
**A geologist is analyzing rock samples, each with a unique mineral composition. If there are 4 distinct types of minerals in a sample, and she