The distance of a point in the 3-D system from the origin A. is defined by the absolute value of the vector from the origin to this point. B. is the squareroot of the square of the sums of the x-, y- and z-values. C. is the square root of the sum of the squares of x-, y- and z-values. D. can either be negative or positive.
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.
Choose the correct answer/s. Choose E if none of the choices is correct.
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