All of the following represent the same set of numbers except positive integers
whole numbers
natural numbers
counting numbers

Let us define each :

1. Natural numbers : the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well.

2.Whole numbers: Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on)

3. Positive integers: The positive integers, z+ , consist of the whole numbers beginning with one.

4. Counting numbers: Any number you can use for counting things: 1, 2, 3, 4, 5, ... (and so on). Does not include zero.

So we can say that whole numbers is the odd one out, since it includes 0 and others dont.

The answer is whole numbers because only whole numbers are the set that starts from zero.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

i dont know if you cant find a way its best to actually add all of them start from 105 tho

step-by-step explanation: