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Find the triple integral?

Evaluate the triple integral ∫ from 0 to 1 ∫ from 0 to z ∫ from 0 to 2y of 22*ze^-y^2 dx dy dz.
The answer should be 11/e but I got (11/2)e^-y^2. Can anyone please show all the work that leads to the correct answer? And please tell me where I can get math worksheets for Multivariable Calculus (Calculus 3) practice problems, especially for finding multiple integrals like this problem, thank you. 

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