exam
Maths Puzzle
Numerical Ability
One colored chip-red,blue, or green- is selected ar random, and a die is rolled. Use the counting prnciple to determine the number of sample points in the sample space.
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My question is: Suppose that you have a supply of a 30%solution of alcohol
and 70% of solution of alcohol. how many quartz of each should be mixed to poduce 20 quartz that is 40%alcohol?
y = 2x - 1