A certain number of plants have been purchased to be planted in rows in a garden. If the plants are planted 6 plants per row, 8 plants per row, or 10 plants per row, there is always 1 plant left over. What is the minimum number of plants that were purchased?

A.) 49
B.) 61
C.) 81
D.) 121
E.) 481

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.