my blog is fine and my posts are normal
Ohoho how the turn tables
Love that you’re making it clear exactly what physical demands this job has, but could you possibly, potentially, phrase it differently?
My resume
5001 being divisible by 3 doesnt feel right
Shortcuts to determine if an integer is divisible by:
- This is a given.
- If the last digit is divisible by 2 (a.k.a. even), then so is the whole number.
- If the sum of the digits is divisible by 3, then so is the whole number. The recursivity of this means that if the sum has multiple digits, you can add them up again until you get a single digit and see if it's 3, 6, or 9.
- Like the rule for 2, but check if the last two digits are divisible by 4.
- If it ends in 5 or 0.
- If the rules for both 2 and 3 apply.
- No shortcut. Alas.
- Like the rules for 2 and 4, but check if the last three digits are divisible by 8. (Yes, this pattern keeps going for 16, 32, etc.)
- Like the rule for 3, but the sum of the digits (or the sum of the sum of the digits, etc.) must be 9.
- If it ends in 0.
PSA.
I think my W11 machine has already had this update (must check when I get up) and is Ok. But others seem not to have been so lucky. This article details a temporary fix.
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