sat math permutations
How many different 4-digit numbers can be formed using all of the following numbers?
0,1,1,9
(A) 4
(B) 12
(C) 16
(D) 24
thanks
the answer is posted here
http://www.satmath4u.com/threads/92-sat-math-permutations
How many different 4-digit numbers can be formed using all of the following numbers?
0,1,1,9
(A) 4
(B) 12
(C) 16
(D) 24
thanks
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