14) A IRS auditor randomly selects 3 tax returns from 45 returns of which 15 contain errors that she selects none of those containing errors? Round to four decimal places. 15) A sample of 4 different calculators is randomly selected from a group containing 46 that are defective and 26 that have no defects. What is the probability that all four of the calculators selected are defective? Round to four decimal places.
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
14 and 15
14) Given Information:
A IRS auditor randomly selected 3 tax returns from 45 returns, of which 15 contain errors.
To find the probability that she selects none of those containing errors:
Total possible outcomes: i.e.,
Number of ways of selecting 3 tax returns from a total of 45 returns is ways.
If 15 contain errors, contain no errors.
Favourable outcomes:
Number of ways of selecting 3 tax returns that do not contain errors is done in ways.
That is:
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