Search found 5 matches
- by vivekverma
Sun Jul 13, 2008 1:14 am- Forum: Problem Solving
- Topic: if a and b are positive even integers, and the least common
- Replies: 5
- Views: 5382
- by vivekverma
Sun Jul 13, 2008 1:12 am- Forum: Problem Solving
- Topic: A customer using a certain telephone calling plan pays a fee
- Replies: 11
- Views: 4472
Ans. E
=>One's digit is 7 gives no clue about ten's digit (Ignore)
=> Ten's digit of 2x is 5 gives nothing again .. 2x it can be any number of the form _5_.
Coming 1 and 2 we have x= _7 and 2x=_54
2x can be 154 or just 54 making x 77 or 27 respectively.
No clear solution.
- by vivekverma
Sat Jul 12, 2008 7:47 am- Forum: Data Sufficiency
- Topic: tens digit please help!
- Replies: 5
- Views: 1537
Solutions : 1. 1/a+1/b = 5/6 1/a+1/c = 2/3 1/b+1/c = 1/2 2(1/a+1/b+1/c)=5/6+2/3+1/2 => 1/a+1/b+1/c = 1 2. Out of n numbers, let no. of 77's be x : So, we have sum = 77x + 7(n-x) = 350 => n+10x = 50 For different values of x : if x=1 n=40(Ans.) 3. For isosceles triangle, sides = x,x,x(root 2) Sum of ...
- by vivekverma
Sat Jul 12, 2008 7:30 am- Forum: Problem Solving
- Topic: gmat prep1 q's. please help!
- Replies: 8
- Views: 1761
- by vivekverma
Sat Jul 12, 2008 7:12 am- Forum: Sentence Correction
- Topic: gmat paper
- Replies: 2
- Views: 1435