Answer:
n≥15
Step-by-step explanation:
3n≥45
/3 /3
n≥15
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.
Answer:
I believe you have selected all the correct answers, just give me a few seconds to make sure.
