## ã6.3.bã Practice on Miscellaneous Counting

[Math Center] 1. A certain store sells two types of pens: one type for \$[latex]2[latex] per pen and the other type for \$[latex]3[latex] per pen. If a customer can spend up to \$[latex]25[latex] to buy pens at the store and there is no sales tax, what is the greatest number of pens the customer can […]

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[Math Center] 1. Consider an experiment with events [latex]A, B[latex], and [latex]C[latex] for which [latex]P(A)=0.23,P (B)=0.40, P(C)=0.85[latex], and Suppose that events [latex]A[latex] and [latex]B[latex] are mutually exclusive and events [latex]B[latex] and [latex]C[latex] are independent. What are the probabilities [latex]P(AorB)[latex] and [latex]P(BorC)[latex]?     2. In a box of [latex]10[latex] electrical parts, [latex]2[latex] are defective. (a) […]

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[Math Center] 1. In how many different ways can the letters in the word STUDY be ordered?     2. Martha invited [latex]4[latex] friends to go with her to the movies. There are [latex]120[latex] different ways in which they can sit together in a row of [latex]5[latex]Â  seats, one person per seat. In how many […]

## ã6.2.aãāĻ¸āĻŽā§āĻ­āĻŦā§āĻ¯āĻ¤āĻž

Â [Math Center Home] [āĻ¨ā§āĻāĻ āĻāĻ āĻāĻ°ā§āĻāĻŋāĻā§āĻ˛āĻāĻŋ (6)Â Counting and Probability āĻŦāĻŋāĻ­āĻžāĻā§āĻ°Â āĻāĻ§ā§āĻ¨ā§Â ã2ãProbability āĻā§āĻ¯āĻžāĻĒā§āĻāĻžāĻ°ā§āĻ° āĻāĻ¨ā§āĻ¤āĻ°ā§āĻāĻ¤, āĻ¯āĻžÂ ã6.2.aãāĻāĻŋāĻšā§āĻ¨ āĻĻāĻŋā§ā§ āĻĒā§āĻ°āĻāĻžāĻļ āĻāĻ°āĻž āĻšā§ā§āĻā§] ã6.2.aãāĻ¸āĻŽā§āĻ­āĻŦā§āĻ¯āĻ¤āĻž Probability is a quantity that expresses the chance, or likelihood, of an event. In other words, it measures how often an event will occur in a long series of repeated trials. For events with countable outcomes, probability […]