International Maths Olympiad Forum By SOF Olympiad Trainer - Page 614

# User Forum Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Subject :IMO    Class : Class 6

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Subject :IMO    Class : Class 3

## Ans 1:

Class : Class 3
answer is C, observe circle to be completed

Class : Class 1

Class : Class 6

## Ans 4:

Class : Class 3
endi ra antha tough questions isthanu niku pain theliadhura easy questons ivvu

## Ans 5:

Class : Class 3
cheeeeeeeeeeeeeeeeeeeeeeeeee

## Ans 6:

Class : Class 3
munda yedhava sachinoda sighuledha niku mental burra

Class : Class 3
mental burra

Class : Class 5

## Ans 9:

Class : Class 5
Question, is wrong

Subject :IMO    Class : Class 7

## Ans 1:

Class : Class 8

Subject :IMO    Class : Class 7

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Subject :IMO    Class : Class 8

## Ans 1:

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

## Ans 2:

Class : Class 10

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 3:

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

Subject :IMO    Class : Class 6

## Ans 1:

Class : Class 8

Subject :IMO    Class : Class 4

## Ans 1:

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:

Class : Class 10
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.