International Maths Olympiad Forum By SOF Olympiad Trainer - Page 771
  1. Home
  2. /  Forum

User Forum

Ask Your Question
T. V. Narasimha Rao from ,
Subject :IMO    Class : Class 8

Ans 1:

Admin from SOF, Noida
Class : Class 10
Answer: C

Solution
If a polygon has 'n' sides, then it is divided into (n – 2) triangles. The sum of the angles of a triangle = 180°. Therefore, the sum of interior angles of a polygon having n sides is (n – 2) x 180.
(n - 2) x180 = 1440
n - 2 = 1440/180 = 8
n = 8 + 2 = 10

Ans 2:

sanjay shete from ,
Class : Class 8
the answer should be 10 because= (n-2)*180=1440

Ans 3:

Bindeshwari Prasad from ,
Class : Class 8
it would be 10. [n-2]180=1440 180n-360=1440 180n=1800 n=1800/180 = 10

Post Your Answer

Rahul Jha from Delhi Public School BN, Bengaluru
Subject :IMO    Class : Class 6

Post Your Answer

suhas from podar, kalyan, Dist thane
Subject :IMO    Class : Class 4

Ans 1:

Vrushti from swami vivekanand english primary school, Mumbai
Class : Class 4
Heads ( Lions + Peacocks) = 15, No. of Legs = 25 +15 = 40. Since total legs were 40 no. of lions has to be less than 10 (because 10 x 4 legs = 40 which means zero peacock, which is not possible...) . so if we take 5 lions and 10 peacocks, total heads = 15 & total legs = 5 x 4 + 10 x 2 = 40 legs. Thus the answer is 5 peacocks were more than lions.

Ans 2:

Admin from SOF, Noida
Class : Class 10
Answer : D
Solution
Let number of peacocks be p
Let number of lions be l
Number of legs = 15
Number of heads = 15 + 25 = 40
p + l = 15
2p + 4l = 40
Solving the above equations
p = 10 , l = 5
So there are 5 more peacocks than lions.

Post Your Answer

Aniket Srivastava from Victorious Kids Educare, Pune
Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

Post Your Answer

suhas from podar, kalyan, Dist thane
Subject :IMO    Class : Class 4

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7
the answer is 19803 because you should find the difference between 14365-(5876-3243)=11732 23512-(7584-3875)=19803

Ans 2:

Soham De from DPS, Nerul, Mumbai
Class : Class 5
19803

Post Your Answer

mamta from army public school, ramgarh
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Post Your Answer

mamta from army public school, ramgarh
Subject :IMO    Class : Class 7

Ans 1:

Jai kumar Bohara from Dps, Udaipur
Class : Class 9

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Post Your Answer

mamta from army public school, ramgarh
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Post Your Answer

mamta from army public school, ramgarh
Subject :IMO    Class : Class 7

Post Your Answer

mamta from army public school, ramgarh
Subject :IMO    Class : Class 7

Ans 1:

from , Pune
Class : Class 8
Incomplete Question

Ans 2:

Venneti Bhargav from gyan bharati, New Delhi
Class : Class 7
The question is incomplete as well as the solution is wrong. In. In solution they solved operation 'OF' before divide against the BODMAS rules

Ans 3:

Jai kumar Bohara from Dps, Udaipur
Class : Class 9
incompleteincompleteincompleteincompleteincompleteincompleteincompleteincomplete

Ans 4:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
yeah guys !! the question is incomplete and the given solution is also incorrect !!

Ans 5:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
Yes question is incomplete

Ans 6:

Abhjith S Kumar from Airport Senior Secondary school Karipur, Kozhikode Intl. Airport, Kozhikode Airport
Class : Class 9
QUESTION IS INCOMPLETE. ALSO THE SOLUTION IS IN CORRECT.

Ans 7:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
This question is incomplete!

Post Your Answer