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'.

Problem: 54671 - 14456 - 35466 = ? 
Options: a ) 2449 , b ) 5449 , c ) 6749 , d ) 6449 , e ) 4749
e

Problem: in a group of ducks and cows , the total number of legs are 22 more than twice the no . of heads . find the total no . of buffaloes . 
Options: a ) 11 , b ) 12 , c ) 13 , d ) 15 , e ) 16
a

Problem: the average age of applicants for a new job is 31 , with a standard deviation of 5 . the hiring manager is only willing to accept applications whose age is within one standard deviation of the average age . what is the maximum number of different ages of the applicants ? 
Options: a ) 11 , b ) 14 , c ) 15 , d ) 18 , e ) 30

a