Search found 91 matches
Probablity
In a shop there were 12 different pairs of shoes. A man picked 4 shoes randomly then what is the probablity that at least 1 pair of shoes was picked?
- by parveen110
Tue Sep 16, 2014 5:56 am- Forum: Problem Solving
- Topic: Probablity
- Replies: 2
- Views: 1536
P&C
In how many ways is it possible to choose two black squares on a 8 × 8 chessboard so that the squares do not lie in the same row or same column?
a. 400
b. 200
c. 800
d. 100
e. 475
- by parveen110
Tue Jun 24, 2014 4:38 am- Forum: Problem Solving
- Topic: P&C
- Replies: 5
- Views: 6454
How many 4 digit numbers divisible by 5 can be formed using digits 0,1,2,3,4,5,6 and 6? a. 220 b. 249 c. 432 d. 216 e. 288 The intent of this question is that one has to choose only from digits 0,1,2,3,4,5,6 and 6(yes, 6 occurs twice) and make a resulting four-digit number divisible by 5 also. For ...
- by parveen110
Fri Jun 20, 2014 2:13 am- Forum: Problem Solving
- Topic: P&C
- Replies: 6
- Views: 2288
P&C
How many 4 digit numbers divisible by 5 can be formed using digits 0,1,2,3,4,5,6 and 6?
a. 220
b. 249
c. 432
d. 216
e. 288
- by parveen110
Wed Jun 18, 2014 3:21 am- Forum: Problem Solving
- Topic: P&C
- Replies: 6
- Views: 2288
Thank you Mitch, I was really wondering about how to apply critical points approach in this question..thanks!
- by parveen110
Fri Jun 13, 2014 7:40 pm- Forum: Problem Solving
- Topic: Inequality
- Replies: 7
- Views: 3183
Hi Brent! I understand your concern. I really don't know about the standard notations used on the GMAT as i'm not preparing from any standard GMAT material( However, i realise that i should be aware of it while posting). I just refer to couple of good forums on the go and that's all i'm doing in the...
- by parveen110
Fri Jun 13, 2014 12:00 am- Forum: Problem Solving
- Topic: Inequality
- Replies: 7
- Views: 3183
Yes Brent, I know its a level higher. I tried solving it but couldn't get anywhere closer to the options. So, i thought i'm missing something and may get some help out..because i've seen some solution on these lines on the forum.
I just picked up this question from another forum.
- by parveen110
Thu Jun 12, 2014 7:27 am- Forum: Problem Solving
- Topic: Geometry
- Replies: 5
- Views: 2462
Inequality
Find the complete range of values of x for which |x+3|<2x-5.
a. (5/2, inf)
b. (-inf,5/2)
c. (8, inf)
d. (9, inf)
e. (2/3,inf)
I always get confused about the questions involving modulus. Please help.
- by parveen110
Thu Jun 12, 2014 7:19 am- Forum: Problem Solving
- Topic: Inequality
- Replies: 7
- Views: 3183
Geometry
No three diagonals of a convex polygon are concurrent except at its vertices. If the number of points of intersection of the diagonals in the interior of the polygon is 715, then find the number of diagonals of the polygon (A) 65 (B) 55 (C) 45 (D) 35 (E) 75
- by parveen110
Thu Jun 12, 2014 6:23 am- Forum: Problem Solving
- Topic: Geometry
- Replies: 5
- Views: 2462
Hi Brent!! Could you please also give an alternate solution where order matters. I'm getting confused when trying to solve the other way. Or what is wrong with my approach: # of ways we may select remaining three persons= 6 x 5 x 4 # of ways we may select all four out of eight = 8 x 7 x 6 x 5 Probab...
- by parveen110
Mon Jun 09, 2014 2:37 am- Forum: Problem Solving
- Topic: Probability question - Adam selected and not Karen
- Replies: 11
- Views: 5221
What's wrong with the following approach: # of ways to select 4 ppl from: 4 single men= 4C4=1 3 single men and any one from married couple= 4C3*6C1 = 24 2 single men and any two from married couple= 4C2*6C1*4C1= 144 1 single men and any three from married couple= 4C1*6C1*4C1*2C1= 192 Also, accountin...
- by parveen110
Sun Jun 08, 2014 3:21 am- Forum: Problem Solving
- Topic: a PS from Gmat
- Replies: 6
- Views: 2338
Just would like to implement one of the important things about probablity that i learnt through many posts on this forum: It doesn't matter how you count things, as long as you're consistent. Coming to the problem: Let two red and two white rose bushes are identical. So, The desired combination is: ...
- by parveen110
Mon Jun 02, 2014 2:15 am- Forum: Problem Solving
- Topic: Probability - HELP
- Replies: 6
- Views: 2023
Geometry
There are two concentric circles such that the area of the outer circle is four times the area of the inner circle. Let A, B, and C be three distinct points on the perimeter of the outer circle such that AB and AC are tangents to the inner circle. If the area of the triangle ABC is 9Root3/PI square ...
- by parveen110
Mon Jun 02, 2014 1:50 am- Forum: Problem Solving
- Topic: Geometry
- Replies: 4
- Views: 1668
- by parveen110
Sun Jun 01, 2014 2:25 am- Forum: Problem Solving
- Topic: Probablity
- Replies: 7
- Views: 4743
Richard has 3 green, 2 red, and 3 blue balls in a bag.He randomly picks 5 from the bag without replacement.What is the probability that of the 5 drawn balls, Richard has picked 1red, 2 green, and 2 blue balls? 8/28 9/28 10/28 10/18 11/18 Think of the 8 balls as G1, G2, G3, R1, R2, B1, B2, and B3 # ...
- by parveen110
Sat May 31, 2014 1:13 am- Forum: Problem Solving
- Topic: Probability question
- Replies: 12
- Views: 3412