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Question

Mathematics Question on permutations and combinations

Number greater than 1000 but less than 4000 is formed using the digits 0, 1, 2, 3, 4 (repetition allowed). Their number is

A

125

B

105

C

375

D

625

Answer

375

Explanation

Solution

Required number of numbers = 3 ×\times 5 ×\times 5 ×\times 5 = 375