Brilliant
Probability
Level
3
How many ways can you select two letters from the word "BRILLIANT"?
The answer is 23.
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1 solution
We have 9 letters with 'i' & 'l' repeating 2 times each.
Hence we can have 7 distinct selections.
For 2 letters at a time, we can select in 7*6/2 = 21 ways.
But 2 i's & 2 l's can each be selected separately.
Hence, we have 23 selections in all.