International Maths Olympiad Forum By SOF Olympiad Trainer - Page 14
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Shreyan from Delhi Public School Bangalore East, Bangalore
Subject :IMO    Class : Class 5

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savyasachi from montfort , roorkee
Subject :IMO    Class : Class 8

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Romit Gupta from MVN senior secondary school sector 17 Faridabad , Faridabad
Subject :IMO    Class : Class 10

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Vinay HD from vvssphs, bangalore
Subject :IMO    Class : Class 8

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shaurya aggarwal from scholars rosary senior secondary school, rohtak
Subject :IMO    Class : Class 9

In the given figure (not drawn to scale), O is the centre of the circle. Find the value of x.


A30°
B44°
C42°
D50°


please specify whether CD is a straight or not. if it is a straight line then the figure is not correct. the being that triangle BOD is congruent to triangle BOC by SSS congruency. so by CPCT angle BOD and angle BOC is of 72 degrees. which doesn't satisfy that CD is straight line. as the sum of angles is 144 degrees not 180 degrees

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Anshuman Charan Pahadi from Ryan International School , Bangalore
Subject :IMO    Class : Class 8

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Vidyut Amit Kini from Kohinoor International School, Mumbai
Subject :IMO    Class : Class 3

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Mansi Sadavarti from Vibgyor High, Pune
Subject :IMO    Class : Class 6

Which of the following statements is INCORRECT?

AThe area of a rectangular children park is 396 m2. It is 18 m wide. If the cost of fencing the park by wire is ₹ 75 per metre, then the total cost of fencing is ₹ 6000.
BA square and a rectangle have the same area of 81 cm2. The length of the rectangle, if the breadth of the rectangle is one-third of the side of the square is 27 cm.
CIf 1 cm is equal to 10 mm, then 100 square mm are there in 1 sq. cm.
DPawan walks twice around a rectangular field with length 30 m and breadth 25 m. If Neha walks thrice around a square field of side 40 m, then Pawan covers more distance by 260 m.


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Divij Chaudhry from Strawberry fields high school, Chandigarh
Subject :IMO    Class : Class 5

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Shrihan Raul from GIIS SINGAPORE, Singapore
Subject :IMO    Class : Class 3

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