Count the possible combinations of 2 letters chosen from L, M, N, O.The possible combinations of 2 letters are .
Question
Count the possible combinations of 2 letters chosen from L, M, N, O.
The possible combinations of 2 letters are:
- LM
- LN
- LO
- MN
- MO
- NO
Solution
To count the possible combinations of 2 letters chosen from L, M, N, O, we use the combination formula which is nCr = n! / r!(n-r)!.
Here, n is the total number of items, and r is the number of items to choose.
In this case, n = 4 (since we have 4 letters: L, M, N, O) and r = 2 (since we are choosing 2 letters).
So, the number of combinations is 4C2 = 4! / 2!(4-2)! = (4321) / (2121) = 6.
So, there are 6 possible combinations of 2 letters chosen from L, M, N, O.
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