Divisibility rule by 7
版本 1.1.0.0 (1.4 KB) 作者:
Diyashvir Kreetee Rajiv Babajee
This code helps us to verify whether a number is divisible by 7 using the divisibility rule
1 we express a number as a linear combination of powers of 10
2 for example
1980=1*10^3+9*10^2+8*10^1+0*10^0
we get [1 9 8 1]
apply divisibility rule by 7
remaining digits-2(last digit)
k=1
1 9 8 -2(1)=196
k=2
19 - 2(6)=7
k=3
0-2(7)=-14 which is divisible by 7
stop we get a negative number
引用格式
Diyashvir Kreetee Rajiv Babajee (2024). Divisibility rule by 7 (https://www.mathworks.com/matlabcentral/fileexchange/32877-divisibility-rule-by-7), MATLAB Central File Exchange. 检索来源 .
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