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Question

Mathematics Question on Permutations

The number of numbers, strictly between 50005000 and 1000010000 can be formed using the digits 1,3,5,7,91,3,5,7,9 without repetition, is

A

72

B

120

C

6

D

12

Answer

72

Explanation

Solution

The correct answer is (A) : 72
Numbers between 5000&10000
Using digits 1,3,5,7,9