Answer:
1/8
Step-by-step explanation:
No I do not know how to do this
Step-by-step explanation:
z^7/z^-14=21
z^21=21
Answer:
Step-by-step explanation:
A tree diagram? I don't think so. Probably it would take a year's supply of paper to record all the possibilities. The question really is do you allow duplications and is 0 allowed to be the first digit.
I would think that both are fine.
So the total number for this number would be 10^9. There probably some sort of algorithm to reduce the number and to check if it is a legitimate choice for this number.
