Anon-food crop is infected by pests on the 1st of a month. the pests infect the crop in such a way that the area infected doubles after each month. if the pests continue to infect the crop in this way, the non-food crop will be entirely infected after the sixth month. after which month will one-eighth of the non-food crop be infected? a. one-eighth of the non-food crop will be infected after the fifth month. b. one-eighth of the non-food crop will be infected after the third month. c. one-eighth of the non-food crop will be infected after the fourth month. d. one-eighth of the non-food crop will be infected after the second month.

This doesn’t make sense to me it’s supposed to be lcm ( least common multiple )

Ineed me i stuck and i don’t want to get it wrong

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.