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How many three-letter "words" can be made from 10 letters "FGHIJKLMNO"
if repetition of letters
(a) is allowed?
Your answer is :
(b) is not allowed?
Your answer is :
(a) is allowed?
Your answer is :
(b) is not allowed?
Your answer is :
Get help:
Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Box 2: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity