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How many natural numbers exist in the range 142858 to 999999 inclusive, such that :
a. None of them is a multiple of 5.
b. The digit 3 is not contained in the number

D1 Please provide your estimate solution (p & p)
D3. Evaluate the exact result.

(No Solution Yet, 3 Comments) Submitted on 2021-12-04 by Ady TZIDON   
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