Question 522679
<pre>
Sorry, there is no one answer because
there are many, many, possibilities.

1. For example, if her scores were

30 60 70 100 100 then her random selections of three could
result in:

30+60+100 = 190, 30+100+100=230, 60+100+100=260.

2. Or, her scores could have been

50 70 70 90 100

and her sums could be 50+70+70=190, 70+70+90=230, 70+90+100=260

3. Or her scores could have been

20 60 80 90 90

and her sums could be 20+80+90=190, 60+80+90=230, 80+90+90=260 

4. And it's not even necessary that any two scores be the same, or that
any score not be chosen, for this is a possibility too:

30 60 70 90 100

and her sums could be 30+70+90=190,  60+70+100=230,  70+90+100=260

None of those scores are the same and all five were included in at least
one of the random selections.

We could go on and on and on.  There is just not enough information to
determine her individual scores on each of the 5 exams, as the above
examples show.

Edwin</pre>