CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
harshit tiwari

· started a discussion

· 1 Months ago

Negative marking (Question: 78050.0 )

Is negative marking 1/2 in this mock test each negative answer cuts 1 mark

Question:
The difference between the exterior and interior angles at a vertex of a regular polygon is 1500. The number of sides of the polygon is:
Options:
A) 10
B) 15
C) 24
D) 30
Solution:

Let the no. of sides of polygon be n.

Then,

\(\big(\cfrac{2n-4}{n}\big)×90^o-\cfrac{360}{n}=150\)

6n – 24 = 5n

n = 24

Knowledge Expert

· commented

· 1 Months ago

Let interior angle be X
and exterior angle be Y
So, we can write them as X-Y=150 degrees
and X+Y=180 degrees

in order to find the number of sides of a polygon the formula is

360 degrees/interior angle


so by solving above two equations we get X= 15 degrees

so 360 degrees/15 degrees


n=24 sides
-logo
We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.
More About
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions