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Countdown 3.3 Countdown! takes up to 100 dates in the past or future and calculates the number of years, months, days, hours, minutes, and seconds. Also
| | Linear Algebra 2 Performs computations associated with matrices: Solves systems of linear equations, finds sum, difference, product, determinant, trace
| | Coolumns 3.03 Protect cool columns from filling up completely in five puzzle games! Take out pieces of the columns and make one-colour lines of them
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