Question: Please help asap Discrete math question How many 5 digit positive integers exist with sum of their digits equals to 17?(Note: An example of a

Please help asap

Discrete math question

  1. How many 5 digit positive integers exist with sum of their digits equals to 17?(Note: An example of a "5 digit positive integer" is 23891 and sum of the digits of 23891 is 2 + 3 + 8 + 9 + 1 = 23)
  2. For all n bigger or equal to 0, let _bn_ be the number of all binary strings of length _n_ which have even number of 0's and even number of 1's.Find the recurrence relation for _bn_ with suitable initial conditions.

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