About this discussion

- © 2015-2016
- Careers
- Advertise
- Contact Us

Hi Guys, Geometry, Algebra and Number system form the major chunk of our QA section for CAT. Proficiency in these three sections would definitely boost our Quants scores. Contents of Geometry 1\. Plane Geometry - Basics and Tri...

Follow this discussion to get notified of latest updates.

Nice! Share it on Facebook so that your friends can join you here.

Order by:
New Posts

Page 2 of 32

C and D are points on the circle with diameter AB such that (angle AQB) =2*(angle COD), where O the center of the circle. Q is the point of intersection of AC and DB inside the circle.The tangents at C and D meet at P. The circle has radius 1. The distance of P from its center is:

(a) (sqrt2)/3

(b) 2/(sqrt3)

(c) 3/(sqrt2)

(d) 1

OK...i am losing the track here...in the question,it is not specified that he has to cover all the cities.Is that we are taking into account while solving??

From top city,3 routes are possible

Since there are 3 edges leading from each city and also the figure is perfectly symmetrical, these 3 routes are possible from each edge.

So,total number of routes = 4 * 3 = 12.

ps : one more ceo from Delhi

Commenting on this post has been disabled.

Four cities are connected by a road network as shown in the figure. In how many ways can you start from any city and come back to it without traveling on the same road more than once

10,12,14,15

I am getting 13 as the answer..that too by calculating manually all the routes.Is there any shortcut for such questions??

Image is attached.

From top city,3 routes are possible

Since there are 3 edges leading from each city and also the figure is perfectly symmetrical, these 3 routes are possible from each edge.

So,total number of routes = 4 * 3 = 12.

ps : one more ceo from Delhi

Commenting on this post has been disabled.

If x, y, z are the angles of a triangle where x, y, z are integers, what is the number if values that x-y-z can take?

1. 90

2. 355

3. 178

4. 177

Please provide me with a solution.....

Quote:Solution I found on PG :

Originally Posted by

x-y-z = 180-2(y+z)

y+z -> 2 to 179

So, 178 values...

- 2 Likes

Commenting on this post has been disabled.

Four cities are connected by a road network as shown in the figure. In how many ways can you start from any city and come back to it without traveling on the same road more than once

10,12,14,15

I am getting 13 as the answer..that too by calculating manually all the routes.Is there any shortcut for such questions??

Image is attached.

10,12,14,15

I am getting 13 as the answer..that too by calculating manually all the routes.Is there any shortcut for such questions??

Image is attached.

Commenting on this post has been disabled.

1. 90

2. 355

3. 178

4. 177

Please provide me with a solution.....

- 1 Like

Commenting on this post has been disabled.

dpiict Saysmy take is option b.

calculation error, 1/2

Commenting on this post has been disabled.

ABC is a triangle with area 1. AF = AB/3, BE = BC/3 and ED = FD. Find the area of the shaded figure.

Choose one answer.

a. 1/2 b. 5/9 c. 1/3 d. 13/16

my take is option b.

Commenting on this post has been disabled.

@QWiXFiX
2

In an acute angle triangle all the angles are positive integers and 13 times one angle is equal to 17 times another angle then what could be the minimum angle??

Please solve it ..i dint get it after trying for 3 hrs

ans can also be 30 ,65,85..

30+65+85=180...all are positive integers....and 17*65=13*85 also..

so the ans should be 30..

That's correct!

The possible triplets are - (17,13,150),(34,26,120),(51,39,90),(68,52,60),(85,65,30).

Only last 2 satisfy the acute angled tr. criteria...so you have ur answer.

Commenting on this post has been disabled.

@QWiXFiX
2

ADE is the triangle here...not a straight line. Plz refer to original detailed solution by ravitoons!

Commenting on this post has been disabled.

When you follow a discussion, you receive notifications about new posts and comments. You can unfollow a discussion anytime, or turn off notifications for it.

117 people follow this discussion.- CAT 2015 Applications & Online Registration
- CAT • 12:00 AM, 06 Aug '15

- India International Animation and Cartoon Film Festival (IIACFF)
- CAT • Thursday, 1 Oct

0Comments »new comments