What number of various ways would you be able to choose 2 letters from the arrangement of letters: X, Y, and Z? (Indicate: In this issue, request is NOT critical; i.e., XY is viewed as an indistinguishable choice from YX.)
Arrangement: One approach to take care of this issue is to rundown the greater part of the conceivable determinations of 2 letters from the arrangement of X, Y, and Z. They are: XY, XZ, and YZ. Along these lines, there are 3 conceivable mixes.
Example 1
The group of different ways that a certain number of object as a group can be selected from a large object.
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Order does not matter unordered
list group
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Choice, selection &
election
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