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1. In how many ways can 2 novels, 3 mathematics textbooks, and 2 chemistry books be arranged on a
bookshelf if the mathematics books must be together and the chemistry books must be together?
2. Suppose that 75% of senior citizens invest in annuities and 45% of senior citizens invest in the stock
market. If 85% of senior citizens invest the the stock market and/or annuities, what percentage invest in
both?
550.420 INTRO TO PROBABILITY MIDTERM 1 SPRING 2026 (Complete And Verified Study material) (10pages) LEARNEXAMS
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