MBA
Exam
How many four-digit numbers can be made by using exactly three different digits among the digits 4, 5, 6 and 7? 1) 156 2) 124 3) 132 4) 144 5) 120
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- 144
4*3*4!/2! =144 - 11 years agoHelpfull: Yes(0) No(0)
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