What is the approximate age of a star cluster where the brightest main sequence stars are g stars?

The approximate age of a star cluster where the brightest main sequence stars are G stars is 10 billion years. Generally, it takes tons of time for stars to evolve. It is also assumed that stars in a cluster are homogenous or have properties that are similar to one another. The amount of time the star remain in its stage or sequence phase is determined through its mass.

Argon, carbon-14, and carbon-12

Here is a picture  of the net. its 4 squares in a row diagonal and on the third draw one square aove and under