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formula for figuring out how many different combinations. To find the number of ways to select 3 of the 4 paintings disregarding the order of the paintings divide the number of permutations by the number of ways to order 3. This is because there are four spaces to be filled.
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This is because there are four spaces to be filled. Fortunately when given such a set you can solve the number of combinations mathematically using the nCr formula. The answer is 4.
N C r 10.
The answer is 4. This is because there are four spaces to be filled. There are possible combinations of 4 students from a set of 15. For example a lock combination is in fact a permuation.
