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Averaging factorials (Posted on 2024-03-16) Difficulty: 3 of 5
Let m and n be one digit integers (0 to 9) with m>n

1a. Evaluate the mean value of (m!-n!)mod(10)
1b. Evaluate the mean value of (m!-n!)mod(3)

Let m and n be two digit integers (10 to 99) with m>n

2a. Evaluate the mean value of (m!-n!)mod(10)
2b. Evaluate the mean value of (m!-n!)mod(3)

3. Find recursive formulas for n digit integers.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Puzzle ThoughtsK Sengupta2024-03-16 21:53:32
Some Thoughtsthoughts and calculationsCharlie2024-03-16 13:20:43
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