To pass inspection, a machine part from a factory must be no thinner than 4.225 centimeters and no thicker than 4.233 centimeters. Select all the thicknesses that would result in the part passing the inspection. A 4.227 centimeters ® 4.230 centimeters © 4.234 centimeters O 4.240 centimeters © 4.231 centimeters ® 4.224 centimeters
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
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