CAT Quantitative Ability Questions | CAT Permutation, Combination and Probability questions

CAT/2005

Question . 17

Let S be the set of five-digit numbers formed by the digits 1, 2, 3, 4 and 5, using each digit exactly once such that exactly two oddpositions are occupied by odd digits. What is the sum of the digits in the rightmost position of the numbers in S?

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