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: if a * b * c = ( √ ( a + 2 ) ( b + 3 ) ) / ( c + 1 ) , find the value of 6 * 15 * 3 . 
Options: a ) 8 , b ) 5 , c ) 11 , d ) 3 , e ) 4
d

Problem: the average of 5 quantities is 9 . the average of 3 of them is 4 . what is the average of remaining 2 numbers ? 
Options: a ) 16.5 , b ) 10 , c ) 8 , d ) 9.5 , e ) none of these
a

Problem: what is the dividend ? the divisor is 17 , the quotient is 4 and the remainder is 8 . 
Options: a ) 76 , b ) 67 , c ) 176 , d ) 671 , e ) 0

a