First question: How do you calculate a majority (51%) for an odd number of members? For example, 51% of 12 is 7 (50% is 6 and you need one more vote than 50%). But, for 11, 50% is 5.5 members and one more is 6.5 or 7 when rounded up. But, if you multiply 7 by .51, you get 5.61 which is 6 when rounded up.
Second question: At what decimal point do you round up for a two-thirds vote. For example, two-thirds of 12 is 8.0004, two-thirds of 15 is 10.005, two-thirds of 19 is 12.673, and two-thirds of 20 is 13.34. For two-thirds of 19 and 20, I can see rounding up to 13 and to 14, respectively, but for 12 and 15, it seems that two-thirds should be 8 and 10, respectively.
Thanks, Betty.