Solution:
Given the combination of selecting r objects from a total of n objects;
A permutation or combination is a set of ordered things. The “things” can be anything at all: a list of planets, a set of numbers, or a grocery list.
Combination: If you don’t care what order you have things, it’s a combination. Think of combining ingredients.
Hence, option k is correct.
Also;
Combination is how lotteries work. The numbers are drawn one at a time, and if we have the lucky numbers (no matter what order) we win. Hence, in combination, repeating is not allowed.(except in few conditions)
ANSWERS: Option i and Option k