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Solution


Q.

The number of integers, greater than 7000 that can be formed, using the digits 3, 5, 6, 7, 8 without repetition, is       [2023]
1 168  
2 120   
3 220  
4 48  

Ans.

(1)

5 digits numbers = 5! = 120

Four digit number greater than 7000 = 2 × 4 × 3 × 2 = 48

Total number greater than 7000 = 120 + 48 = 168