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: for all positive integers m , [ m ] = 3 m when m is odd and [ m ] = ( 1 / 2 ) * m when m is even . what is [ 5 ] * [ 8 ] equivalent to ? 
Options: a ) [ 40 ] , b ) [ 60 ] , c ) [ 80 ] , d ) [ 120 ] , e ) [ 150 ]

SOLUTION: d

PROBLEM: Problem: which number can we add to 897326 to get a number exactly divisible by 456 ? 
Options: a ) 58 , b ) 66 , c ) 74 , d ) 82 , e ) 90

SOLUTION: d

PROBLEM: Problem: if 15 students in a class average 70 % on an exam and 10 students average 90 % on the same exam , what is the average in percent for all 25 students ? 
Options: a ) 78 % , b ) 79 % , c ) 80 % , d ) 81 % , e ) 82 %

SOLUTION:
a