InterviewSolution
Saved Bookmarks
| 1. |
How Many No Between 1000 To 9900 In Which Four Digits Of Number Are Different? |
|
Answer» Number of 4 DIGIT NUMBERS having all different digits = 9*9*8*7 = 4536 smallest number : 1234, largest number : 9876, all are between 1000 and 9900. Number of 4 digit numbers having all different digits = 9*9*8*7 = 4536 smallest number : 1234, largest number : 9876, all are between 1000 and 9900. |
|