To determine how many threes go into 27, you divide 27 by 3. The calculation is 27 ÷ 3 = 9. Therefore, there are 9 threes in 27.
35
210
22
100 of them
Fifteen. 3, 13, 23, 30, 31, 32, 33*, 34, 35, 36, 37, 38, 39, 43. Note 33 has two threes.
Forty-one, the two forty-threes and forty-seven are prime.
27 threes are in 81
100
33.33... the threes never will end.
There are: 91/3 = 30 with a remainder of 1
As a decimal, 0.33... where the threes go on and on forever. As a percentage, 33.33.. where, again, the threes go on.