Answer:

Step-by-step explanation:
Given



Required
The probability of selecting 2 same colors when the first is not replaced
The total number of ball is:


This is calculated as:

So, we have:

<em>Note that: 1 is subtracted because it is a probability without replacement</em>






Answer:
426
Step-by-step explanation:
Subtract 247 from 673 to get 426
Answer:
9 meters
Step-by-step explanation:
54/6 = 9