This game is based on a famous TV show: Countdown: Letters and Numbers.

In that game, there appear math and word questions.
If your IQ and vocabulary is good enough, you may answer the questions within the given time period.

In math mode, you get 6 numbers and a target. Using primitive four math operations and the given numbers, your goal is to reach the target within the time frame.

In word mode, you receive several characters and a wild character. Using those given characters, the goal is to construct a longest word.

All questions are assisted with computer solutions. First try to solve on your own, and ask for an assist to get helped.

This game helps development of both analytical skills and vocabulary.

Based on your comments and suggestions, the following improvements are employed:

Countdown timer. Score calculation based on remaining time.
Move to SD card feature is enabled.
Application size is significantly reduced.