Consider a 7 digit number in the form ABC Where A is 2.9 and X, B, and a can be any digit 0.9. Additionally B and C cannot both equal 1 since these values are designated
for other purposes such as services like 911. Lastly 555 0100 through 555-0199 are
reserved for fictional uses such as in television shows or movies,
According to these conditions how many 7 digit numbers are possible in a single area
code?