240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
Answer:
Step-by-step explanation:763
The answer is 1/5, or 0.2, because if you're always putting the slip back in, then there will always by 5 slips to choose from, therefore making the probability 1 out of 5. I hope this helps!
Answer:
-11
Step-by-step explanation: