Answer:
a =15
b=70
c=400
d=1500
e=5300
Step-by-step explanation:
it will help u
J. -8 is the correct answer
The distributive property
Note that there's a strict order here -> 2 close friends, then 1 non-close friend.
So, picking in order:
probability of picking the first close friend: 4/10
probability of picking the second close friend: 3/9
probability of picking the first non-close friend: 6/8
So, we get 4/10 * 3/9 * 6/8 = 1/10.