This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revision | Last revisionBoth sides next revision | ||
fuss:mathematics [2020/04/22 17:02] – office | fuss:mathematics [2021/12/03 17:28] – [Fonts] office | ||
---|---|---|---|
Line 26: | Line 26: | ||
| math blackboard bold (calligraphic) | used mostly for sets | ''< | | math blackboard bold (calligraphic) | used mostly for sets | ''< | ||
+ | ====== Divisibility ====== | ||
+ | |||
+ | * by $2$, last digit in a number is divisible by $2$, | ||
+ | * by $3$, the result of all digits summed up in a number is divisible by $3$, | ||
+ | * by $4$, last two digits in a number form a smaller number that has to be divisible by $4$, | ||
+ | * by $5$, last digit divisible by $5$, | ||
+ | * by $10$, number ends in $0$ | ||
====== Index ====== | ====== Index ====== | ||
{{indexmenu> | {{indexmenu> | ||