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Q. Number of numbers greater than a thousand can be made using the digits 1, 0, 3, 4 and 5 without repetition of the digit is

Permutations and Combinations

Solution:

Four digit $=\times \times \times \times=4 \cdot 4 !=96 ; 5$ digit $=4 \cdot 4 !=96 \Rightarrow 2 \cdot 96=192$