Since the last digit is already decided, you only have to find the possible ways for a 6 digit phone number. For each individual digit, you have a possibility of 10. Since there are 10 numbers, the answer is
Answer:
28.26
Step-by-step explanation:
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For number 5 I believe it's 4?
I don't know how to upload a picture but I can tell you what to write
Start off with a writing the problem then you have to divide two from both sides
1) 2x=8
/2 /2
Once you divide two from both sides x is alone so you were left with X=4 which gives you the answer
2) x = 4
Answer: Choice C) A and B must be independent
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In general,
P(A and B) = P(A)*P(B|A)
and
P(A and B) = P(B)*P(A|B)
The only time P(A) = P(A|B) and P(B) = P(B|A) are true is when A and B are independent. In other words, one event occurring does not alter the probability of the other event.