Answer:
Out of a class of 8 boys and 4 girls, a group of 7 people is chosen at random.
Find the probability that the group of 7 includes one particular boy. Find the probability that the group of 7 includes at least 2 girls?
boys= 8
girls= 4
total= 12
probability that the group of 7 includes a boy= 8/12= 2/3
probability that the group of 7 includes at least 2 girls= 4/12= 1/3
Step-by-step explanation:
Answer:
So since
Step-by-step explanation:
The equation to determine this would be to multiply the number of spots by, each, the total number of possible candidates, minus one, consecutively.
In other words:
-9 kids total
-7 will be selected
calculation: 9*8*7*6*5*4*3
That calculation will give you the total number of possible outcomes, and only one of them will yield 4 girls being selected. Therefore, the odds are:
1/9*8*7*6*5*4*3
Work out the multiplication, and you get this:
1/181,440
Or, 1 out of 181,440; or,
181,440 to one.
