two types of star clusters are Open clusters and globular clusters
global clusters, open clusters and star clusters. (:
Milky Way Galaxy
A galaxy typically has several star clusters.
The star groups are galaxies, or possibly globular star clusters.
Any major galaxy has LOTS of star clusters, including globular clusters, if that's what you mean.
The question contains the answer 100,000. "if each of these star clusters contains 100,000 stars, how many stars exist in these clusters" If you mean the total number, are you seriously saying you don't know how to multiply 100,000 by 158?
Open clusters lie along the Milky Way and half of the globular clusters are in or near the constellation Sagittarius.
Yes.
Large star clusters, made up of multiple arms, and usually shaped like a pinwheel. They contain billions of stars.
Those are called globular clusters, or star clusters.
Stars, star clusters, distant galaxies, galaxy clusters, nebulae, ...