How many four digit numbers can be formed using digits 0,1,2,3,4 such that repetition of digits is allowed or not allowed
a.500,96,125,96,500,48,125,48?
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allowed
1234,1243,2143,2134,2413,2314,4123,4213,4132,3124,3214,3412,3431,1024,1204,1402,1034
and many more....
1234,1243,2143,2134,2413,2314,4123,4213,4132,3124,3214,3412,3431,1024,1204,1402,1034
and many more....
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