TASK DEFINITION: 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: Problem: if xy > 0 , 1 / x + 1 / y = 4 , and 1 / xy = 6 , then ( x + y ) / 2 = ? 
Options: a ) 1 / 25 , b ) 1 / 6 , c ) 1 / 5 , d ) 1 / 3 , e ) 6

SOLUTION: d

PROBLEM: Problem: if xy denotes x is raised to the power y , find the last two digits of 19413843 + 19614181 
Options: a ) 67 , b ) 97 , c ) 55 , d ) 32 , e ) 62

SOLUTION: e

PROBLEM: Problem: a jar of 264 marbles is divided equally among a group of marble - players . if 2 people join the group , each one would receive 1 marble less . how many people are there in the group today ? 
Options: a ) 20 , b ) 21 . , c ) 22 , d ) 23 , e ) 24

SOLUTION:
e