Search found 22 matches
Hi Rich,
Thanks a lot for the calcification .
These questions are given for practice.
Thanks
s91arvindh
- by s91arvindh
Fri Jun 06, 2014 6:42 pm- Forum: GMAT Math
- Topic: Geometry-Cone
- Replies: 2
- Views: 1970
Geometry-Cone
Tanks A and B are identical inverted conical tanks. A is completely filled with water. B is filled with water to half its depth. The ratio of the areas of the top free water surfaces in the two tanks is a) 2 : 1 b) 4 : 1 c) 6 : 1 d) 8 : 1 e) 10 : 1 Answer b
- by s91arvindh
Thu Jun 05, 2014 10:43 pm- Forum: GMAT Math
- Topic: Geometry-Cone
- Replies: 2
- Views: 1970
http://s27.postimg.org/ldn1p3na7/Hexagon.jpg Hi Rich, Thanks a lot for giving a direction to solve this question, I tried your method with the values of angles, The area of triangle in the hexagon will be 5*1/2*b*h I have considered Side as 4, The height of the triangle will be 2squareroot(3) Area ...
- by s91arvindh
Tue Jun 03, 2014 8:30 pm- Forum: GMAT Math
- Topic: Geometry- Hexagon
- Replies: 2
- Views: 2032
Geometry- Hexagon
ABCDEF is a regular hexagon. P, Q and R are mid-points of AB, CD and EF respectively. Ratio of areas of triangle PQR to hexagon is
a) 1 : 2 b) 1 : 3 c) 2 : 3 d) 4 : 9 e) 3 : 8
Answer e
Source of this question is from a handout received in class.
- by s91arvindh
Mon Jun 02, 2014 10:22 pm- Forum: GMAT Math
- Topic: Geometry- Hexagon
- Replies: 2
- Views: 2032
Time Speed and Distance- Bus and A car- Part 2
A bus moving at 60 mph is 5 miles behind a car. After 20 minutes, it is 10 miles ahead of the car.
Bus overtakes car after what time?:
[spoiler]
6.66 mins[/spoiler]
- by s91arvindh
Sun May 11, 2014 11:22 pm- Forum: Problem Solving
- Topic: Time Speed and Distance- Bus and A car- Part 2
- Replies: 2
- Views: 1722
Time Speed and Distance- Bus and A car- Part 1
A bus moving at 60 mph is 5 miles behind a car. After 20 minutes, it is 10 miles ahead of the car.
what is the speed of the car .
15mph
- by s91arvindh
Sun May 11, 2014 11:19 pm- Forum: Problem Solving
- Topic: Time Speed and Distance- Bus and A car- Part 1
- Replies: 2
- Views: 3400
Example 2 :- A Man walked from his house to office at 5kmph and got 20 minutes late. if he had traveled at 7.5kmph, he would have reached 12 minutes early. The distance from his house to office is? Here s1 = 5kmph t1 = t2 + 20 + 12 s2 = 7.5kmph t2 = t2 (S1 / S2) = (t2 / t1) ------> (5/7.5) = (t2 / ...
- by s91arvindh
Sun May 04, 2014 10:40 pm- Forum: Problem Solving
- Topic: Time, Speed, and Distance Simplified
- Replies: 10
- Views: 68583
- by s91arvindh
Sun May 04, 2014 8:01 pm- Forum: Problem Solving
- Topic: Permutation and Combination using Sets
- Replies: 8
- Views: 3123
Permutation and Combination using Sets
In a class of 25 students, every student takes either Spanish, Latin or French or two of the three but not all three. 9 take Spanish, 7 take Latin and 5 take exactly two languages.Number of students who take French ? [spoiler] Answer 14[/spoiler] Note: The above question is from a handout which is i...
- by s91arvindh
Sun May 04, 2014 7:41 pm- Forum: Problem Solving
- Topic: Permutation and Combination using Sets
- Replies: 8
- Views: 3123
Thanks Brent !
These questions are given for in depth understanding the concept of permutation and combination.
- by s91arvindh
Sun May 04, 2014 5:31 am- Forum: Problem Solving
- Topic: Permutation and combination -Finding n
- Replies: 2
- Views: 1204
Permutation and combination -Finding n
A person can invite one or more of his friends for lunch in a maximum of 500 ways. The number of friends he has may be
a) 4 b) 6 c) 8 d) 10
[spoiler]
Answers are a,b,c[/spoiler]
Note: The questions are from handouts provided
- by s91arvindh
Sun May 04, 2014 4:00 am- Forum: Problem Solving
- Topic: Permutation and combination -Finding n
- Replies: 2
- Views: 1204
Permutaiton and Combination -Letter Problem
4 letters are randomly selected from PROPORTION. a) Number of ways for selecting 3 alike and one different b) Number of ways for selecting 2 alike and 2 others alike c) Number of ways for selecting 2 alike and 2 other different d) Number of ways for selecting all 4 different Requesting to help me on...
- by s91arvindh
Sat May 03, 2014 2:29 am- Forum: Problem Solving
- Topic: Permutaiton and Combination -Letter Problem
- Replies: 2
- Views: 1213
Hi Quasar, Thanks a lot for heads up :) There are 12 books - A, B, C,......K, L in a shelf. In how many ways can 5 books be selected? A) A and C cannot be selected together B) If A is selected, then C must also be selected For A: Case 1: With A selected there are 11c4 ways which is 330 Case 2: With ...
- by s91arvindh
Sat May 03, 2014 2:19 am- Forum: Problem Solving
- Topic: Permutaion and Combination- Books arrangemnt
- Replies: 5
- Views: 1557
Permutaion and Combination- Books arrangemnt
There are 12 books – A, B, C,......K, L in a shelf. In how many ways can 5 books be selected?
A) A and C cannot be selected together
B) If A is selected, then C must also be selected
Answers are A->912 , b->372
- by s91arvindh
Fri May 02, 2014 10:24 pm- Forum: Problem Solving
- Topic: Permutaion and Combination- Books arrangemnt
- Replies: 5
- Views: 1557
Find the number of ways 5 boys and 4 girls can be seated in a row. 2 girls cannot sit together _B_B_B_B_B_ These are the "girl chairs" Notice that this ENSURES that no two girls sit together. Thanks a lot for your reply ! I am confused with the question now. Since it was said no two girls...
- by s91arvindh
Fri May 02, 2014 8:10 am- Forum: GMAT Math
- Topic: Permutation and combination-Boys and Girls
- Replies: 2
- Views: 5243