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  2. Question
  3. Mathematics
  4. Let S be the set of all five digit positive integers formed from the digits in the set 1,2,3,4,5,6,7,8,9 without repetition. Find the number of these integers in which the digits 3,5,7 appear in order (not necessarily consecutively) from left to right.

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Q. Let $S$ be the set of all five digit positive integers formed from the digits in the set $\{1,2,3,4,5,6,7,8,9\}$ without repetition. Find the number of these integers in which the digits $3,5,7$ appear in order (not necessarily consecutively) from left to right.

Permutations and Combinations

Solution:

Correct answer is '0300'