42. This is because you cross out the numbers left from right until theres a number inbetween.
Answer:
Eleven digits for toll calls became standard in all of North America by the end of 1994 to allow introduction of "interchangeable NPA codes" – area codes that did not have a 0 or 1 as the middle digit and could therefore be confused with the central office code – after January 1, 1995.
Step-by-step explanation:
The answer is
I know this because I did (4 x 11 x 30) + (7 x 20 x 11)
This is also equal to 1320 + 1540 = 2860. Hope this helped!
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