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علم آرزوها =ریاضی - قواعد بخش پذیری بر اعداد 1 تا 15
 
علم آرزوها =ریاضی
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مدیر وبلاگ : abbas jamali
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قواعد بخش پذیری بر اعداد 1 تا 15

1. همه ی اعداد بر یک بخش پذیر هستند.
2.
عددی بر 2 بخش پذیر است که رقم یکانش بر 2 بخش پذیر باشد.
3.
عددی بر 3 بخش پذیر است که مجموع ارقامش بر 3 بخش پذیر باشد.
4.
عددی بر 4 بخش پذیر است که رقم یکان به اضافه ی 2 برابر رقم دهگان آن بر 4 بخش پذیر باشد.
   )
عددی بر 4 بخش پذیر است که دو رقم سمت راست آن بر 4 بخش پذیر باشد .(
5.
عددی بر ۵ بخش پذیر است که رقم یکان صفر یا 5  باشد.
6.
عددی بر 6 بخش پذیر است که بر2 و3 بخش پذیر باشد.
7.
عددی بر 7 بخش پذیر است که اگر 2 برابر رقم یکان آن را از عددی که از حذف یکان به دست آمده کم کنیم، حاصل بر7 بخش پذیر باشد.
8.
عددی بر 8 بخش پذیر است که رقم یکان به اضافه 2 برابررقم دهگان به اضافه ی 4 برابر رقم صدگان آن بر 8 بخش پذیر باشد.
)
عددی بر 8 بخش پذیر است که سه رقم سمت راست آن بر 8 بخش پذیر باشد(
9.
عددی بر 9 بخش پذیراست که مجموع ارقامش بر9 بخش پذیر باشد.
10.
عددی بر 10 بخش پذیر است که رقم یکان آن صفر باشد.
11.
عددی بر 11 بخش پذیر است که اگر ارقام آن را یک در میان به دو دسته تقسیم کنیم و مجموع ارقام هر دسته را به دست آوریم و سپس دو عدد به دست آمده را از هم کم کنیم عدد حاصل بر 11 بخش پذیر باشد.
12.
عددی بر 12 بخش پذیر است که بر 3 و 4 بخش پذیر باشد.
13.
عددی بر 13 بخش پذیر است که اگر 4 برابر رقم یکان آن را با عددی که از حذف یکان به دست آمده جمع کنیم، حاصل بر 13 بخش پذیر باشد.
14.
عددی بر 14 بخش پذیر است که بر 2 و 7 بخش پذیر باشد.
15.
عددی بر 1۵ بخش پذیر است که بر 3 و 5 بخش پذیر باشد.


 





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