A point has one dimension, length?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?