The sample responses given suggest the types of responses possible for the Headline Story. You might add another clue so that only one number will fit.
A number has two digits, it is even, and its tens digit is 3. What might the number be?
It could be 30, 32, 34, 26, or 38. Some possible clues (and the numbers they determine) include “It is a multiple of 5.” (30) “It is more than 37.” (38) “It is a square number.” (36) “You can make it by doubling, starting at 1.” (32: 1, 2, 4, 8, 16, 32) “The sum of the digits is 7.” (34)