Search found 269 matches
ds question
If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k? (1) The tens digit of k + 9 is 3. (2) The tens digit of k + 4 is 2. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (...
- by dunkin77
Fri Jun 15, 2007 9:32 am- Forum: Data Sufficiency
- Topic: ds question
- Replies: 1
- Views: 1728
- by dunkin77
Fri Jun 15, 2007 6:03 am- Forum: Problem Solving
- Topic: 1-12
- Replies: 5
- Views: 2566
Thanks - yes, OA is D.
sorry...but
can you show me the process from 10X+10Y/(x+y) to 10+10y/(x+y)???
from there how to get 18?
- by dunkin77
Fri Jun 15, 2007 3:14 am- Forum: Problem Solving
- Topic: 1-17
- Replies: 3
- Views: 1908
- by dunkin77
Thu Jun 14, 2007 3:16 pm- Forum: Problem Solving
- Topic: 1-19
- Replies: 6
- Views: 2145
- by dunkin77
Thu Jun 14, 2007 12:24 pm- Forum: Data Sufficiency
- Topic: 1-16
- Replies: 4
- Views: 2360
- by dunkin77
Thu Jun 14, 2007 12:22 pm- Forum: Problem Solving
- Topic: 1-19
- Replies: 6
- Views: 2145
1-19
Each of the 30 boxes in a certain shipment weighs either 10 pounds or 20 pounds, and average (arithmetic mean) weight of the boxes in the shipment is 18 pounds. If the average weight of the boxes in the shipment is to be reduced to 14 pounds by removing some of the 20-pound boxes, how many 20-pound ...
- by dunkin77
Thu Jun 14, 2007 11:52 am- Forum: Problem Solving
- Topic: 1-19
- Replies: 6
- Views: 2145
- by dunkin77
Thu Jun 14, 2007 11:33 am- Forum: Problem Solving
- Topic: 1-17
- Replies: 3
- Views: 1908
- by dunkin77
Thu Jun 14, 2007 11:27 am- Forum: Data Sufficiency
- Topic: 1-16
- Replies: 4
- Views: 2360
1-15
If p is the product of the integers from 1 to 30, inclusive, what is the greatest integer k for which 3^k is a factor of p?
A. 10
B. 12
C. 14
D. 16
E. 18
OA will follow.
- by dunkin77
Thu Jun 14, 2007 11:24 am- Forum: Problem Solving
- Topic: 1-15
- Replies: 3
- Views: 2194
1-12
If n is a positive integer, what is the remainder when 3^8n+3 + 2 is divided by 5?
A. 0
B. 1
C. 2
D. 3
E. 4
Can anyone help pls?
- by dunkin77
Thu Jun 14, 2007 11:13 am- Forum: Problem Solving
- Topic: 1-12
- Replies: 5
- Views: 2566
1-11
Mary persuaded n friends to donate $500 each to her election campaign, and then each of these n friends persuaded n more people to donate $500 each to Mary’s campaign. If no one donated more than once and if there were no other donations, what was the value of n? (1) The first n people donated 1/16 ...
- by dunkin77
Thu Jun 14, 2007 11:10 am- Forum: Data Sufficiency
- Topic: 1-11
- Replies: 2
- Views: 2260
- by dunkin77
Thu Jun 14, 2007 11:04 am- Forum: Problem Solving
- Topic: 1-8 geometry
- Replies: 2
- Views: 1517
I think you're right. all negative + odd number will fail...so we need 2) as well. so, it must be C) Thank you! 
- by dunkin77
Tue Jun 12, 2007 12:11 pm- Forum: Data Sufficiency
- Topic: ds question
- Replies: 2
- Views: 1888
- by dunkin77
Tue Jun 12, 2007 9:09 am- Forum: Data Sufficiency
- Topic: DS question
- Replies: 1
- Views: 1687