Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 6)
6.
How many of the following numbers are divisible by 132 ?
264, 396, 462, 792, 968, 2178, 5184, 6336
264, 396, 462, 792, 968, 2178, 5184, 6336
Answer: Option
Explanation:
132 = 4 x 3 x 11
So, if the number divisible by all the three number 4, 3 and 11, then the number is divisible by 132 also.
264 11,3,4 (/)
396 11,3,4 (/)
462 11,3 (X)
792 11,3,4 (/)
968 11,4 (X)
2178 11,3 (X)
5184 3,4 (X)
6336 11,3,4 (/)
Therefore the following numbers are divisible by 132 : 264, 396, 792 and 6336.
Required number of number = 4.
Discussion:
61 comments Page 1 of 7.
Reshma said:
2 decades ago
I DIN'T understand the logic, Could u please explain it ?
Gaurav said:
1 decade ago
These three numbers are the LCM of the Given number i.e. 132.
Hiji said:
1 decade ago
Why can't we take 2*2*3*11 ? Why it is only 4*3*11 ?
Hema said:
1 decade ago
Why have we taken only 4, 3, 11 why can't we take 2?
Priya said:
1 decade ago
All the numbers are even, so not necessary to take 2 as a to check. By taking the minimum nos to use, we split 132 as 4*3*11
Deepa said:
1 decade ago
Thats is nothing but the 132 is the multiplication of 11*3*4 the no which are divisible by these 3 are the answers.
Emela said:
1 decade ago
I need a shortcut method to solve this problem please.
Jahanzeb said:
1 decade ago
Logic is not clearly explain the answer.
Please explain me in easiest way.
Please explain me in easiest way.
Reuben said:
1 decade ago
If a number "A" is divisible by all factors of another number say "B", then "A" is divisible by "B"
thats the logic
example factors of 6= 2*3
any number that is divisible by both 2 and 3 will be divisible by 6. always
in this quetsion we have factorized 132 in to 4*3*11 so that we can check whether all numbers are divisible by them.. if yes then the number is divisible by 132.
ps: shortcut, u need to learn the divisibility rules for 11 and 3, google them
thats the logic
example factors of 6= 2*3
any number that is divisible by both 2 and 3 will be divisible by 6. always
in this quetsion we have factorized 132 in to 4*3*11 so that we can check whether all numbers are divisible by them.. if yes then the number is divisible by 132.
ps: shortcut, u need to learn the divisibility rules for 11 and 3, google them
Sunny said:
1 decade ago
You have told that the number divisible by all the three number 4, 3 and 11, then the number is divisible by 132 also.
but,462 is divisible by 4,3 and 11,so according to your logic,so why 462 is not in the category that divisible by 132.WHY? please reply very soon
but,462 is divisible by 4,3 and 11,so according to your logic,so why 462 is not in the category that divisible by 132.WHY? please reply very soon
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