Labels:text | font | screenshot | letter OCR: The Six Number Muncher Games (cont.) Inequality allows you to look for numeric expressions that are less than, greater than or not equal to a specific number. If you're looking for expressions that are not equal to 10, you should munch "6 + 3," "12 - 4," "2 x 7," and "15 + 3," among others. Challenge is the most difficult type of game. It presents a random selection of the other games checked in the Content screen. For example, if you've checked Factors, Primes, and Equality as well as Challenge, a Challenge game will draw upon those other three types of games. For Challenge to work, at least two other types of games have to be selected as well.