SATHEE: Permutations And Combinations Question 235

Permutations And Combinations Question 235

Question: All possible numbers are formed using the digits 1, 1, 2, 2, 2, 2, 3, 4, 4 taken all at a time. The number of such numbers in which the odd digits occupy even places is

Solution:

Answer: 180

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Permutations And Combinations Question 235

Question: All possible numbers are formed using the digits 1, 1, 2, 2, 2, 2, 3, 4, 4 taken all at a time. The number of such numbers in which the odd digits occupy even places is

Solution:

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