International Maths Olympiad Forum By SOF Olympiad Trainer - Page 648
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Prasuk Jain from Modern Delhi Public School, Faridabad
Subject :IMO    Class : Class 7

Ans 1:

Shubhi Vats from Kendriya Vidyalaya Ordnance Factory Chanda, Bhadrawati
Class : Class 7
the correct answer is C.

Ans 2:

Ishaan ranjan Maurya from Shree ram global school, Noida
Class : Class 7
Thr correct answer is A not B C or D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 3: (Master Answer)

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

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Carrie Goyal from OPBMS, Mandi Gobindgarh
Subject :IMO    Class : Class 6

Ans 1:

Pulin Sharma from Marble Arch School, Mumbai
Class : Class 6
2 is the answer

Ans 2:

Carrie Goyal from OPBMS, Mandi Gobindgarh
Class : Class 7
rectangle has 2 lines of symettery

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Amogh R Gowda from National Public School Kengeri, Bengaluru
Subject :IMO    Class : Class 6

Ans 1:

Rohan Jagadev from dps, Bangalore
Class : Class 7

Ans 2:

Ayaan from HFSI POWAI, MUMBAI
Class : Class 6
So they said what is the predecessor of the SUCCESOR of MDVI (which is 1506) so its a trick question and the awnser is the same

Ans 3:

anushka samanta01 from delhi public school bangalore east, BANGALORE
Class : Class 6

Ans 4:

from Delhi Public School Noida, GHAZIABAD
Class : Class 6

Ans 5:

Bhavisha Modi from Nanavati school, MUMBAI
Class : Class 6

Ans 6: (Master Answer)

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

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EKANSH from DAV, LUDHIANA
Subject :IMO    Class : Class 4

Ans 1:

Nandini from Blue Ridge Public School, Pune
Class : Class 5
please help

Ans 2:

pushkar from KV DRDO, BANGALORE
Class : Class 4
i dont know how to do /

Ans 3:

Shraddha from Delhi public school, Hyderabad
Class : Class 4
OMG

Ans 4:

Shraddha from Delhi public school, Hyderabad
Class : Class 4
I think it’s B

Ans 5:

Viplav Shrimal from dps, Bangalore
Class : Class 7

Ans 6:

Kabir from R.E.D. Sr. Sec. School Chhuchhakwas, Jhajjar
Class : Class 4
Answer is b.Please give explanation.

Ans 7:

srinivasn from SKCH, Bengaluru
Class : Class 5
can any body explain this question?

Ans 8:

Devansh from asn senior secondary school, delhi
Class : Class 8
see the carefully the Question

Ans 9:

devank laddha from bhaskaracharya International School , chalisgaon
Class : Class 6
Find the tree which is South-east of mango tree

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lakshmi priya from Emerald Valley Public School, Salem
Subject :IMO    Class : Class 10

Ans 1: (Master Answer)

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

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lakshmi priya from Emerald Valley Public School, Salem
Subject :IMO    Class : Class 10

Ans 1:

Abhash from DAV PUBLIC SCHOOL, Darbhanga
Class : Class 10
The answer is option c

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lakshmi priya from Emerald Valley Public School, Salem
Subject :IMO    Class : Class 10

Ans 1: (Master Answer)

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

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lakshmi priya from Emerald Valley Public School, Salem
Subject :IMO    Class : Class 10

Ans 1: (Master Answer)

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

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lakshmi priya from Emerald Valley Public School, Salem
Subject :IMO    Class : Class 10

Ans 1: (Master Answer)

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

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Pallab Layak from Vidyashilp Academy, Bangalore
Subject :IMO    Class : Class 8

Ans 1:

rajib jana from DPS MEGA City, Kolkata
Class : Class 8
A rectangle is a type of trapezium only and anyway the diagonals of a square is also equal

Ans 2:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
i agree, A is correct, there is no incorrect answer, as a rectangle is a special trapezium

Ans 3:

Vipin Garg from BAL BHARATI PUBLIC SCHOOL, New Delhi
Class : Class 7
Answer should be D diagonals are equal in square as well So if diagonals are equal it need not be a rectangle

Ans 4:

N Khanna from MJKPS, New Delhi
Class : Class 10
Both a and d options are correct, its marker wrong. Rectangle is a special trapezium and square also has all sides equal

Ans 5:

Tejas Agarwal from Prudence School , New Delhi
Class : Class 10
The answer is D as Rectangle is also a special type of trapezium so it is correct . Also, the option B is correct. Option C is correct too as interior angle sum of triangle is 180 and the exterior angle sum is double i.e. 360The correct answer would be option D as isosceles trapezium also has its diagonals equal therefore it is the incorrect statement required. Therefore, the answer should be D instead of C

Ans 6:

Antara Mazumdar from Navy Children School, Mumbai
Class : Class 8

Ans 7:

Arkajyoti Das from techno, Cooch Behar
Class : Class 9
wrong answer.it should be d

Ans 8:

Anirudh from 989820Delhi Pubic school Rohini , Delhi
Class : Class 8
D is answer

Ans 9:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
Since the options seem incorrect, kindly report an error for this question. Hopefully this gets reviewed.

Ans 10:

Pranav Gupta from Ryan International School, Delhi
Class : Class 9
all options can be correct but if we see logically, option (D) states that "if the diagonals of a quadrilateral are equal it must be a rectangle" whereas the diagonals of a kite can also be equal.

Ans 11:

Yash Bindal from Global Indian International School, Singapore
Class : Class 9

Ans 12:

Aarush Babbar from Birla Vidya Niketan New Delhi, New Delhi
Class : Class 8
all options are true, i think option(c) should be "Triangle is a polygon whose exterior angle is double its interior angle". This way option(c) will be INCORRECT

Ans 13:

Tanmay singh from KPSI ATAL NAGAR , NAYA RAIPUR, RAIPUR
Class : Class 10
rectangle is also a trapezium because atleast one pair of sides parallel……..

Ans 14:

arnav raj sharma from gulibulium school, new york
Class : Class 8
all options are correct(A) a rectangle follows all the characteristics of a trapizium. It has one pair of parllel sides. it has four sides and sum of all the angles is 360(b) it can be drawn like one angle is 90 and four sides are 40,40,50,50 than it is a rectangle which is quadrilateral(c)It is a law that sum of ext. angles in every polygon is 360 and sum of int. angles in a triangle is 180 which is half of 360(d) all the quadrilaterals that have equal diagonals follow all the rules of a rectangle like square which has two set of equal and parllel sides and its diagonals are equal. A square also has all right angles.

Ans 15:

Pranav Gupta from Ryan International School, Delhi
Class : Class 9
everyone to kindly check my panswer post it will most probably help u resolve what is the answer and please if there is any incorrect answer in my provided answer, please tell that thing.

Ans 16:

VYOM VIVEK PATEL from Doon Public School Bhuj, Bhuj Kuchchh
Class : Class 9

Ans 17:

Aayushman mohapatra from Sental The Global School, Hyderabad
Class : Class 9

Ans 18:

Angshu from Dehli Public School Bangalore East, Bangalore
Class : Class 9
A is correct. By definition, a trapezium has ONLY ONE pair of parallel sides. A rectangle has 2 pairs of parallel sides, hence it is not a trapezium.

Ans 19:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Wrong question guys !

Ans 20:

D VISHNU from NARAYANA SCHOOL, CHENNAI
Class : Class 7

Ans 21:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8

Ans 22:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
This question is unclear if synopsis does not define it

Ans 23:

Pallab Layak from Vidyashilp Academy, Bangalore
Class : Class 9
Trapezium is a quadrilateral with two parallel sides. Parallelogram is a special case of trapezium and rectangle is a special case of parallelogram, hence rectangle is a special case of trapezium

Ans 24:

Arnav from NPS, Bangalore
Class : Class 9
all answers are correct, this question is wrong

Ans 25:

Darsh Goel from Phoneix Greens, Hyderabad
Class : Class 9
Wrong Question guys both a and d look incorrect as rectangle is not a trapezium and even square's diagonals are equal.

Ans 26:

Janani swethaa from CS ACADEMY, Erode
Class : Class 10
The answer is D

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