mbaiseasy
Rule: //t// is the greatest integer less than or equal to t
Problem: Is //k// evenly divisible by 2?
(1) 5 < k < 6
//k// = 5 which is not divisible by 2
SUFFICIENT.
(2) //k + 2.3// = 7
8 > k + 2.3 >= 7
5.7 > k > 4.7
if k = 4, YES
if not, NO
INSUFFICIENT.
Answer: A
Reviving an old thread... can I kindly clarify an item?
I completely understand these equations:
8 > k + 2.3 >= 7
5.7 > k >= 4.7
However, given these, how can we assume that K = 4 when it's clearly said that K>=4.7?
If I take the solution set above, then
K = 4.7 --> NOT EVENLY DIVISIBLE BY 2
K = 5 --> NOT EVENLY DIVISIBLE BY 2
K = 5.7 --> NOT EVENLY DIVISIBLE BY 2
Any number from the solution set seems to be non-divisible by 2. If that's the case, then B should be sufficient.
Please let me know what I am missing
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EDIT: I get it now. I misunderstood the question. The question is asking for // K // and not for K. Hence B is not sufficient.