Replace X with the appropriate number in
4 , 5 , 14 , 15 , 24 , 25 , X
Pick one:
A) 30  B) 29  C) 34  D) 21  E) 20
34   list of consecutive numbers that has an 'f' in the spelling
<result>C</result>
Replace X with the appropriate number in
4 , 5 , 14 , 15 , 24 , 25 , X