Please answer step by step. Thank you! Decide the number of possibilities of the given situation: A test generator has to pick 3 questions from a test bank of 39 questions. How many different sets of three can the generator choose?
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.
Please answer step by step. Thank you!
Decide the number of possibilities of the given situation:
A test generator has to pick 3 questions from a test bank of 39 questions. How many different sets of three can the generator choose?
Step by step
Solved in 2 steps
