Can anyone explain this to me?
Is N divisible by 12?
1. N/6 is an integer
2. N/4 is an integer
Thanks!
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ans should be C
1) n is divisible by 6 so n is a multiple of 4, but we lack a 2 to make it a factor of 12
2) n is divisible of 4, so n is a multiple of 4, but we lack a 3
together n is a multiple of 3 and 4 so it is divisible by 12
1) n is divisible by 6 so n is a multiple of 4, but we lack a 2 to make it a factor of 12
2) n is divisible of 4, so n is a multiple of 4, but we lack a 3
together n is a multiple of 3 and 4 so it is divisible by 12
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- Senior | Next Rank: 100 Posts
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Should be C) too
1) N/6 = integer meaning 6 is a factor / no remainder for division.
N could be 12 (which works with 12/12... but!) could also be 18 (which doesn't divide into 12 fully)
factors (1,2,3,6)
Not Sufficient
2) N/4
N could be 4, 8, 12, 16. Only 12 divides into 12.
factors (1,2,2,4)
Not sufficient.
Consider C/E
N/6 factor of 6 (1,2,3,6)
N/4 factor of 4 (1,2,2,4)
12 is (1,2,3,4,6,12) which is part of that # group.
Sufficient. C)
1) N/6 = integer meaning 6 is a factor / no remainder for division.
N could be 12 (which works with 12/12... but!) could also be 18 (which doesn't divide into 12 fully)
factors (1,2,3,6)
Not Sufficient
2) N/4
N could be 4, 8, 12, 16. Only 12 divides into 12.
factors (1,2,2,4)
Not sufficient.
Consider C/E
N/6 factor of 6 (1,2,3,6)
N/4 factor of 4 (1,2,2,4)
12 is (1,2,3,4,6,12) which is part of that # group.
Sufficient. C)
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