Answer :
Final answer:
The probability of selecting a yellow or green counter is 5/6 or approximately 0.8333.
Explanation:
We divide the number of favourable outcomes by the total number of possible outcomes to determine the probability of an event. In this case, the total number of counters in the bag is 12. Since we know 2 of them are yellow, and the rest must be green, the number of yellow or green counters is 2 + (12 - 3 - 1) = 10. Therefore, the probability of selecting a yellow or green counter is 10/12, which simplifies to 5/6 or approximately 0.8333.
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