easy · GMAT Quant
A production batch contains 48 components. 8 components are 'Base' units without serial numbers. The other 40 components are 'Advanced' units numbered 1 through 10, with exactly four units of each number.
If an 'Advanced' unit is selected at random, what is the probability its serial number is not prime?
- dfrac35
- dfrac25
- dfrac12
- dfrac14
- dfrac56
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