A telephone company is assigned a new area code and can issue new 7-digit phone numbers. The first number cannot be 0 or 1. There are no restrictions on the remaining 6 numbers.
a. How many possible phone numbers can be issued?
b. Find the probability of being assigned the phone number 867-5309.

step-by-step explanation:

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step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12

what chart am i supposed to follow?