What is the approximate age of the star cluster in the H-R diagram below (Hint: Main-sequence stars of spectral types between A and B have core supplies of hydrogen sufficient to last about 250 million years, between A and F about 2 billion years, type G about 10 billion years, and between K and M about 30 billion years.)
A)200 million years
B)2 billion years
C)10 billion years
D)30 billion years
E)The age of the cluster cannot be estimated from an H-R diagram of the cluster.

Question

What is the approximate age of the star cluster in the H-R diagram below (Hint: Main-sequence stars of spectral types between A and B have core supplies of hydrogen sufficient to last about 250 million years, between A and F about 2 billion years, type G about 10 billion years, and between K and M about 30 billion years.) 
A)200 million years 
B)2 billion years 
C)10 billion years 
D)30 billion years 
E)The age of the cluster cannot be estimated from an H-R diagram of the cluster.

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The Answer of What is the approximate age of the star cluster in the H-R diagram below (Hint: Main-sequence stars of spectral types between A and B have core supplies of hydrogen sufficient to last about 250 million years, between A and F about 2 billion years, type G about 10 billion years, and between K and M about 30 billion years.) 
A)200 million years 
B)2 billion years 
C)10 billion years 
D)30 billion years 
E)The age of the cluster cannot be estimated from an H-R diagram of the cluster.

What Is the Approximate Age of the Star Cluster in the H-R