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: two numbers are less than a third number by 40 % and 47 % respectively . how much per cent is the second number less than the first ?
Options: a ) 95 % , b ) 88 % , c ) 85 % , d ) 90 % , e ) none of these
b

Problem: the sum of three consecutive multiples of 3 is 117 . what is the largest number ?
Options: a ) 45 , b ) 48 , c ) 51 , d ) 42 , e ) 54
d

Problem: what is the tens digit of 7 ^ 1415 ?
Options: a ) 0 , b ) 1 , c ) 2 , d ) 3 , e ) 4
e