Jack and Jill have a magic pail of beans. The number of beans in the pail doubles every second. If the pail is full after 10 seconds, when was the pail half full? Explain your answer. At time 0, we have n beans At time 1, we have 2n beans At time 2, we have 4n beans At time 3, we have 8n beans At time 4, we have 16n beans At time 5, we have 32n beans At time 6, we have 64n beans At time 7, we have 128n beans At time 8, we have 256n beans At time 9, we have 512n beans At time 10, we have 1024n beans 1/2 of 1024 is 512, so at Time 9, the pail is half full.