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2 cards from this section. Quick, good the night before a test.
What is the formula for permutations with repetitions allowed?
Remember that n stands for the number of distinct items.
How many permutations can be formed by selecting 2 letters from {A, B} with repetition?
Think about how many choices you have at each position.
When repetitions are allowed, what is the number of permutations for arranging 3 items chosen from 4 distinct items?
Think about how many options each position has.
True or False: In combinations, order of selection matters.
Remember, combinations are about selecting groups.
If a student can choose any number of fruits from 5 available types, how many combinations of 3 fruits can be made if repetitions are allowed?
Think about how you can represent this as choosing fruits where order does not matter.
Imagine you're coding a simple game character. If you can select 3 powers from 6 distinct powers, but can select the same power multiple times, what would be the total power combinations?
Consider how many powers can occupy each slot!
6 more questions in this section. Enroll free to practise them all.
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