1. Check whether 13676 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 13676 is 76, which is divisible by 4.
`:.` 13676 is divisible by 4.
Divisibility rule of 13 :
4 times the last digit and add it to the rest of the number.
If the answer is divisible by 13, then number is also divisible by 13.
(Apply this rule to the answer again if necessary)
`1367color{red}{6}=>1367 + color{red}{6} xx 4 = 1367 +24 = 1391`
`139color{red}{1}=>139 + color{red}{1} xx 4 = 139 +4 = 143`
`14color{red}{3}=>14 + color{red}{3} xx 4 = 14 +12 = 26`
Here 26 is divisible by 13.
`:.` 13676 is divisible by 13.
13676 is divisible by 4 and 13.
`:.` 13676 is divisible by 52.
2. Check whether 16640 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 16640 is 40, which is divisible by 4.
`:.` 16640 is divisible by 4.
Divisibility rule of 13 :
4 times the last digit and add it to the rest of the number.
If the answer is divisible by 13, then number is also divisible by 13.
(Apply this rule to the answer again if necessary)
`1664color{red}{0}=>1664 + color{red}{0} xx 4 = 1664 = 1664`
`166color{red}{4}=>166 + color{red}{4} xx 4 = 166 +16 = 182`
`18color{red}{2}=>18 + color{red}{2} xx 4 = 18 +8 = 26`
Here 26 is divisible by 13.
`:.` 16640 is divisible by 13.
16640 is divisible by 4 and 13.
`:.` 16640 is divisible by 52.
3. Check whether 19136 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 19136 is 36, which is divisible by 4.
`:.` 19136 is divisible by 4.
Divisibility rule of 13 :
4 times the last digit and add it to the rest of the number.
If the answer is divisible by 13, then number is also divisible by 13.
(Apply this rule to the answer again if necessary)
`1913color{red}{6}=>1913 + color{red}{6} xx 4 = 1913 +24 = 1937`
`193color{red}{7}=>193 + color{red}{7} xx 4 = 193 +28 = 221`
`22color{red}{1}=>22 + color{red}{1} xx 4 = 22 +4 = 26`
Here 26 is divisible by 13.
`:.` 19136 is divisible by 13.
19136 is divisible by 4 and 13.
`:.` 19136 is divisible by 52.
4. Check whether 13678 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 13678 is 78, which is not divisible by 4.
`:.` 13678 is not divisible by 4.
Hence 13678 is also not divisible by 52.
5. Check whether 17440 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 17440 is 40, which is divisible by 4.
`:.` 17440 is divisible by 4.
Divisibility rule of 13 :
4 times the last digit and add it to the rest of the number.
If the answer is divisible by 13, then number is also divisible by 13.
(Apply this rule to the answer again if necessary)
`1744color{red}{0}=>1744 + color{red}{0} xx 4 = 1744 = 1744`
`174color{red}{4}=>174 + color{red}{4} xx 4 = 174 +16 = 190`
`19color{red}{0}=>19 + color{red}{0} xx 4 = 19 = 19`
Here 19 is not divisible by 13.
`:.` 17440 is not divisible by 13.
Hence 17440 is also not divisible by 52.
6. Check whether 19608 is divisible by 52 or not?Solution:Divisibility rule of 52 :
If number is divisible by 4 and 13, then number is also divisible by 52.
Divisibility rule of 4 :
The last two digit is divisible by 4, then number is also divisible by 4.
Last 2 digit of 19608 is 8, which is divisible by 4.
`:.` 19608 is divisible by 4.
Divisibility rule of 13 :
4 times the last digit and add it to the rest of the number.
If the answer is divisible by 13, then number is also divisible by 13.
(Apply this rule to the answer again if necessary)
`1960color{red}{8}=>1960 + color{red}{8} xx 4 = 1960 +32 = 1992`
`199color{red}{2}=>199 + color{red}{2} xx 4 = 199 +8 = 207`
`20color{red}{7}=>20 + color{red}{7} xx 4 = 20 +28 = 48`
Here 48 is not divisible by 13.
`:.` 19608 is not divisible by 13.
Hence 19608 is also not divisible by 52.
This material is intended as a summary. Use your textbook for detail explanation.
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