Search found 6 matches
Answer should be 13/14 The solution goes like this:- Total events 8C3 = 56 For at least one Fashion magazine, the cases can be as follows 1. F S S 2. F F S 3. F F F For 1. the total events will be 4C1 x 4C2 (We are selecting 1 F Mag from a group of 4 and 2 S Mag from a group of 4) = 4 x 6 = 24 For 2...
- by vinaysingh
Tue Sep 11, 2007 11:15 pm- Forum: Problem Solving
- Topic: GMAT Prep test 2
- Replies: 5
- Views: 1880
If the answer is 40, then my explanation goes like this:- Since the question states that all three digits should be distinct and all the numbers selected should be odd, we can thus divide the question in two parts 1. Numbers 801 to 899 _____ _____ _____ (These represent the three digits) The first d...
- by vinaysingh
Tue Sep 11, 2007 11:06 pm- Forum: Problem Solving
- Topic: Permutation
- Replies: 11
- Views: 2352
If the ans is D ie 3/5 then my explanation goes like this:- Total no of events = Selecting 4 children from a group of 6 = 6C4 = 15 Favorable events will only be when 2 boys and two girls are selected (Since equal nos) Selecting 2 Girls from a group of 3 Girls = 3C2 = 3 Selecting 2 Boys from a group ...
- by vinaysingh
Tue Sep 11, 2007 8:14 am- Forum: Problem Solving
- Topic: Scoretop 5 - Q5
- Replies: 4
- Views: 1572
There is another way of solving such problems, for that please remember this formula:- (N/2)((2 x A) + (N-1) D) Where:- N - Total number of digits you have to add A - The first digit D - Difference between two digits Now we'll tackle the problem Here we know that the first digit is 102 so A = 102 Di...
- by vinaysingh
Tue Sep 11, 2007 8:07 am- Forum: Problem Solving
- Topic: even integers
- Replies: 4
- Views: 1730
In this Q I would like to back solve Lets start with D if 8 is the Hyp then the sides would be 4Sqrt 2 The perimeter becomes : 2*4Sqrt 2 + 8 = 8 + 8Sqrt 2 (this gives a clue that we must double the value of the Hyp (16 + 16Sqrt 2) With Choice D if Hyp - 16 then side is 8Sqrt 2 Hence perimeter = 2*8S...
- by vinaysingh
Tue Sep 11, 2007 5:16 am- Forum: Problem Solving
- Topic: Hypotenuse of isoceles triangle
- Replies: 1
- Views: 1445
Here is the trick: the question never mentions that the alphabets can't be repeated. Thats why it is 26*26*26*26 + 26*26*26*26*26
- by vinaysingh
Tue Sep 11, 2007 4:52 am- Forum: Problem Solving
- Topic: Stocks c
- Replies: 2
- Views: 1563