Answer:
a
Step-by-step explanation:
I dont know if this is right but I got: (6x+1)/4
P(P then C)=(7/10)(3/12)
P(PthenC)=21/120
P(PthenC)=7/40
<h3>
Answer: 21600 </h3>
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Explanation:
There are 6 letters to pick from {A,B,C,D,E,F} and we have two slots to fill, where no repeats are allowed. This means we have 6*5 = 30 different ways to pick two letters.
There are 10 digits to pick from {0,1,2,...,9} and there are 3 slots to fill. This gives 10*9*8 = 720 different permutations for this portion.
Overall, we have 30*720 = 21600 different serial numbers possible.
Answer:
The correct answer is D
Step-by-step explanation:
-190 + -100 = -290
190 + -100 = 90
-10 + -100 = -110
10 + -100 = 90
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