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Maths Puzzle
Numerical Ability
Solve the linear system: x+2y= 1
-x+y= -1
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book Other Question
On the opening night of the Broadway musical Miss Saigon, the Rhapsody Theater sold 800 total tickets. An advanced ticket costs $14.50 and a ticket at the door costs $22.00. In all. $16,640 was taken in. How many tickets were sold at he door?
how many combinations of 4 different numbers can you make out of the numbers 1 through 50?