instruction:
In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: for a certain exam , a score of 60 was 2 standard deviations below mean and a score of 100 was 3 standard deviations above mean . what was the mean score for the exam ? 
Options: a ) 74 , b ) 76 , c ) 78 , d ) 80 , e ) 82
answer:
b


question:
Problem: √ ( 36 ) ^ 2 
Options: a ) 6 , b ) 14 , c ) 36 , d ) 21 , e ) none of these
answer:
c


question:
Problem: define a * by the equation a * = π - x . then ( ( − π ) * ) * = 
Options: a ) − 2 π , b ) - 1 , c ) − π , d ) 2 π , e ) 4 π
answer:

c