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: lilly has 10 fish and rosy has 12 fish . in total , how many fish do they have in all ? 
Options: a ) 18 , b ) 20 , c ) 22 , d ) 24 , e ) 26
c

Problem: the element being searched for is not found in an array of 100 elements . what is the average number of comparisons needed in a sequential search to determine that the element is not there , if the elements are completely unordered ? 
Options: a ) 25 , b ) 50 , c ) 75 , d ) 100 , e ) 125
d

Problem: if 21 / 22 = 0 . 95.45 , what is the 57 th digit to the right of the decimal point of the fraction ? 
Options: a ) 1 , b ) 4 , c ) 5 , d ) 7 , e ) 9

b