Answer:
C
Step-by-step explanation:
6*12=72
12*8=96
10*12=120
8*6*2/2=48
72+48+96+120=336
Answer:
2r+12c
Step-by-step explanation:
Answer:
a. 67600000
b. 0.0001396
c. 0.001479
Step-by-step explanation:
a. Since it is a permutation with repetition the formula is:

Where
is the number of optionss, here you will use
and
, one for the numbers and the other for the letters. The exponent
corresponds to how many times you have to choose a number (5 times) or a letter (two times because the first letter is always the same), then:

b. The probability of getting that exactly serial number is 1 divided by the total of possibilities:

C. The probability is the number of serials ending with AA divided by the total. The serial ending with AA can have any numbers then
and 


Answer:
x
= 3
i/
4
, −
3
i/
4
Step-by-step explanation:
Answer:
c
Step-by-step explanation: