Question 1008082
If one is a science major, then the other is 23C2=253
There are 7 ways to choose 1 science major, so that number is 1771.
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If 2 are science majors, there are 7C2 or 21 ways to choose them and 23 ways to choose the rest, or 483,
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If all 3 are science majors, there are 7C3 or 35 ways to choose them
a.  2289
b. 8/30=4/15=0.267
c. Odds are prob yes/prob no
=8/30/22/30=8/22=4/11