International Maths Olympiad Forum By SOF Olympiad Trainer - Page 97
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Kavitharini Joseph from HUS, Chennai
Subject :IMO    Class : Class 4

Ans 1:

Mitesh from Shishya BEML Public School, Bengaluru
Class : Class 7
hey , it is 90 tenths cause tenths means at the tenths place only . But if if there is another no. like 90 tenths we should multiply . But if you choose hundredth tenths it it will become in thousands value.

Ans 2:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
thank you

Ans 3:

Wrik Chatterjee from DELHI PUBLIC SCHOOL NOIDA, Noida
Class : Class 5

Ans 4:

Vedika Kancharla from DDMS P Obul Reddy Public School, Hyderabad
Class : Class 5
b

Ans 5:

digamber12 from st francies xavier english medium school ajgaon, sawantwadi
Class : Class 4
b

Ans 6:

Midhuna from ABCD, Banglore
Class : Class 3
Ya B

Ans 7:

Vaishnavi from DPS , Singapore
Class : Class 4
B

Ans 8:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 9:

Ava from trio, bangalore
Class : Class 2
C

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Arihant kumar from Delhi public school,EOK, New Delhi
Subject :IMO    Class : Class 4

Ans 1:

Jhumpa from BGKV, Kolkata
Class : Class 4
Ok

Ans 2:

Arav Aanand from Father Agnel School, Noida
Class : Class 6
If the movie is for 2 hours it can be shown 6 times between 12 noon and 12 midnight which is 12 hours. 12/2=6. The answer is B.

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tenzin thoesam from Tattva school , bengaluru
Subject :IMO    Class : Class 4

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Sukrit from Swami vivekanand high school , Mumbai
Subject :IMO    Class : Class 4

Ans 1:

ABHAY AGARWAL from ,
Class : Class 3

Ans 2:

akashdeep from Presidium School , New Delhi
Class : Class 7
it should be 103 because 3+5=8+15=23+45=68+35=103 means first +5 then +15 then dirctly +30=45 then -10=+35

Ans 3:

Kanjani Ghonge from Ira Global School, Dombivli
Class : Class 8
It should be 145.

Ans 4:

siddharth from Cambridge Indirapuram, Ghaziabad
Class : Class 6
B

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Neil Pathak from GD Goenka Public School, Paschiim Vihar, New Delhi
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

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

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Rishab Murthy from Birla Public School , Doha
Subject :IMO    Class : Class 4

Ans 1:

Reyansh Garg from Lotus Valley International School, Noida Extension
Class : Class 6
The correct answer is C because one is the outer square, then there are 4 squares inside it and one square is tilted so that will also count.

Ans 2:

spj2011 from DB, Chennai
Class : Class 5
Whole question is wrong. The solution is also wrong. The 'squares' in the question and the solution has to be changed to 'triangles. The only thing which was right is the diagram in the solution.

Ans 3:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
so so so so so so wrong. They wont even let us put this as an error, when we put this as an error, it will say 'Please enter valid error' when it is a valid error. So bad SOF.

Ans 4:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
Unfair

Ans 5:

Aananya Singh from DPS East, Bangalore
Class : Class 4
It should be 6 as the first one is the outer square(biggest one) and there are 4 small squares inside it, which makes 5 squares. There is also one square inside the figure which is tilted. It looks like a rhombus but isn't a rhombus because a rhombus doesn't have 4 angles measuring 90 degrees.

Ans 6:

Hamsini from Yagappa International School, Thanjavur
Class : Class 4
there are 10 triangles:A,B,C,D,E,F,G,H,BC AND GH

Ans 7:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
B as the rhombus if turned slightly diagonally will form a square and 5 squares are already there

Ans 8:

akashdeep from Presidium School , New Delhi
Class : Class 7
5 a 5

Ans 9:

PARTH PANCHAL from NEW HORIZON SCHOLARS SCHOOL, THANE
Class : Class 7
yes,b is the right answer. we should just turn the diamond little bit. it will become square. and the other 5 squares.

Ans 10:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
SOF CLARIFY MY DOUBT ASAP

Ans 11:

Tanav Jain from GCC International School, Thane
Class : Class 3
THE CORRECT ANS: IS B

Ans 12:

Priyanshi Pritam from Vibgyor High, Bangalore
Class : Class 8

Ans 13:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
The correct answer is B

Ans 14:

SUKRIT TANEJA from DPS FARIDABAD, FARIDABAD
Class : Class 4
it should be 5 as that one is a rhombus

Ans 15:

Yatharth Jain from DPS, KUWAIT
Class : Class 6

Ans 16:

Aryan Swain from Kendriya Vidyalaya, Barimul, Kendrapara
Class : Class 5
The correct answer is B.

Ans 17:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8

Ans 18:

digamber12 from st francies xavier english medium school ajgaon, sawantwadi
Class : Class 4
5

Ans 19:

Manya Sharma from ,
Class : Class 4
wrong anwer it should be 8

Ans 20:

Ramvaros Kumar from Dps ranipur, haridwar
Class : Class 5
Correct answer is B

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Harsh Gaud from S N B P school, Rahatani, Pune, Pune
Subject :IMO    Class : Class 4

Ans 1:

SUBHAM BISWAS from Salt Lake school , Kolkata
Class : Class 4
D

Ans 2:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4
ANS;B

Ans 3:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7
the answer is b

Ans 4:

Pratham Gupta from P G Garogdia, Mumbai
Class : Class 5
Answer is B

Ans 5:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
B AS we convert mixed to improper fraction so 4 1/2 = 2 x 4 1 /2 = 9/2 2 1/8 = 8 x 2 1 / 8 = 17/8 Then we find equivalent fractions 9/2 = 9 x 4 / 2 x 4 = 36 / 8 and 17 / 8 will remain same as we know. Now we do subtraction. 36 / 8 - 17 / 8 = 36 - 17 / 8 = 19 / 8 = 19 divided by 8= Quotient=2, Remainder=3 so 2 3/8

Ans 6:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 7:

Mihika Pal Choudhury from The Shri Ram School Vasant Vihar, New Delhi
Class : Class 7

Ans 8:

Tanisha Patri from NPS whitefield, Bangalore
Class : Class 7

Ans 9:

Ankush Dey from Sri Chaitanya Techno School Newtown, Kolkata
Class : Class 6
The correct answer should be Option B. By Ankush

Ans 10:

Siddhi singh from GIIS, Banglore
Class : Class 5

Ans 11:

SUBHAM BISWAS from Salt Lake school , Kolkata
Class : Class 4
D

Ans 12:

akashdeep from Presidium School , New Delhi
Class : Class 7
b because if we divide the into 2 part i.e 4 and 1/2 and 2 and 1/8 means 4-2 whloes is 2 1/2 and 1/8 way 1/2=2/4=4/8-1/8=3/8 hence ans 2 wholes and 3/8

Ans 13:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B

Ans 14:

Yatindra G from SBOA, Chennai
Class : Class 4
How is it B? Guys somebody OH PLEASE explain! I don't understand ANYTHING:(

Ans 15:

Rudraksh Tiwari from Kumaon Public School Dwarahat, Almora
Class : Class 7
B

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NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Subject :IMO    Class : Class 4

Ans 1:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
b

Ans 2:

Daksh Jain from Deens Academy, Bangalore
Class : Class 4
Answer should be C

Ans 3:

Nehal from New Horizon Gurukul, Bangalore
Class : Class 6
if you do not believe c is correct why don't you check in google . Q is rhombus so check does a rhombus have line of symmetry

Ans 4:

Jayanth from The Deens Academy, Bengaluru
Class : Class 4
Ans is c

Ans 5:

Adithya from Psbb senior secondary school, Chennai
Class : Class 8
sorry guys ans is b it is a parallelogram hence it has no lines of symmetry

Ans 6:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 7
Answer 1:Q is a parallelogram. It has no line of symmetry. If you don't believe me, please check on google and search ''Does parallelogram has a line of symmetry or not. -Kushagra Chaturvedi

Ans 7:

Riya from Bhavan Vidyalaya, Chandigarh
Class : Class 8
answer is C

Ans 8:

Saanvi from Avm, Mumbai
Class : Class 5

Ans 9:

NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Class : Class 9

Ans 10:

Deepak Vijayaragavan from Greenwood High, Bengaluru
Class : Class 4

Ans 11:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
see it ISN'T a rhombus it is a parallelogram Master answer explain ASAP as this question can come in IMO

Ans 12:

Arkoprava Dey from Techno India Group Public School, Coochbehar, Coochbehar
Class : Class 9
ANSWER SHOULD BE C. Q HAS A LINE OF SYMMETRY.

Ans 13:

SOUMIL DE from INDUS VALLEY WORLD SCHOOL, KOLKATA
Class : Class 4
the answer is C

Ans 14:

Avaneesh Barithaya from New Horizon Scholars School Vasant Lawns, Thane
Class : Class 5
qqqqq

Ans 15:

Kavitharini Joseph from HUS, Chennai
Class : Class 6
how could the answer be b it has to be c

Ans 16:

Avaneesh Barithaya from New Horizon Scholars School Vasant Lawns, Thane
Class : Class 5
bbbbbshb

Ans 17:

Deepak Vijayaragavan from Greenwood High, Bengaluru
Class : Class 4
Answer is C

Ans 18:

Manaswi Santosh Patil from Silver Crest , Pune
Class : Class 4
C

Ans 19: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 20:

akashdeep from Presidium School , New Delhi
Class : Class 7
ans b symitrical figures are that are diveided eqally

Ans 21:

Lakshya Singh Tomar from DPS Noida, Noida
Class : Class 4

Ans 22:

Twisha Arora from Modern Vidya Niketan, Sector - 17, Faridabad, Haryana, FARIDABAD
Class : Class 7
Ans 15:Anirudh Bhattacharjee from THE LEXICON INTERNATIONAL SCHOOL KALYANI NAGAR PUNR, PuneClass : >Class 5plz dont fight, if it comes in IMO question paper, parallelogram has no line of symmetry.It has a line of symetery Answer 15

Ans 23:

Adithya from Psbb senior secondary school, Chennai
Class : Class 8
It should be C , for sure, kindly make change

Ans 24:

Lakshya Singh Tomar from DPS Noida, Noida
Class : Class 4
correct answer is B PLEASE mind SOF

Ans 25:

Adithya from Psbb senior secondary school, Chennai
Class : Class 8

Ans 26:

jiya zaveri from inventure academy , bengaluru
Class : Class 4
THE ANSWER HAS TO BE C ...HOW CAN IT BE B???A rhombus is symmetrical

Ans 27:

IAMLOST from ABC, Pune
Class : Class 8
plz dont fight, if it comes in IMO question paper, parallelogram has no line of symmetry.

Ans 28:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
SOF olympiad..please make changes to your tests when you have reported errors...or atleast revert back to students who report error.. Ans shd be C...but if you do not make amendments..you are confusing kids

Ans 29:

mishika tripathi from DPS, Gurugram, Haryana
Class : Class 5
yes it should be c

Ans 30:

Ishan Boggarapu from NPS Whitefield, Bangalore
Class : Class 7
It should be C

Ans 31:

Shubham Gautam from KR Mangalam World School, Gurugram
Class : Class 7
answer is C

Ans 32:

Arav from sms, jaipur
Class : Class 6
ans should be D

Ans 33:

Aradhya Gavhankar from PICT model school, Pune
Class : Class 5
The ans is C .Q fig has a line of symmetry

Ans 34:

Rohan Singhal from Manav Rachna International School, Gurgaon
Class : Class 5
Ans=b

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shambhavi verma from n h goel world school, raipur
Subject :IMO    Class : Class 4

Ans 1:

Adithya raj singh from chinmaya international residential school, tirupur
Class : Class 8

Ans 2:

Kaitav Dholu from Doon Public School, Bhuj, Bhuj
Class : Class 5
The correct answer is option B. Please fix this problem

Ans 3:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
c

Ans 4:

Shruti Agarwal from dpsnoida, Noida
Class : Class 8
a

Ans 5:

Anwesha Kale from wisdom world school, pune
Class : Class 5

Ans 6:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
The correct answer is C as Toffee means cake

Ans 7:

Lakshanya Girase from Fravashi Academy, Nashik
Class : Class 5

Ans 8:

Anwesha Kale from wisdom world school, pune
Class : Class 5
The correct answer is C

Ans 9:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8

Ans 10:

Anwesha Kale from wisdom world school, pune
Class : Class 5
CLASS 5TH

Ans 11:

Kaitav Dholu from Doon Public School, Bhuj, Bhuj
Class : Class 5
We cut cake on birthday. But here cake is called butter. The right answer is B

Ans 12:

Kavneet Kaur from Sat Paul Mittal School, Ludhiana
Class : Class 8

Ans 13:

Shaurya Yadav from CRPF PUBLIC SCHOOL , Delhi
Class : Class 4
Answer is C

Ans 14:

SUBHAM BISWAS from Salt Lake school , Kolkata
Class : Class 4
A

Ans 15:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9
The correct answer is C

Ans 16:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
The correct answer is option C.

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shambhavi verma from n h goel world school, raipur
Subject :IMO    Class : Class 4

Ans 1:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
A because the two small lines are not facing towards each other

Ans 2:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4

Ans 3:

Radhika Jain from Sushila Birla Girls' School, Kolkata
Class : Class 5
Why did they give option C bigger than the others. The figure should have been of same size???????????????

Ans 4:

Lakshanya Girase from Fravashi Academy, Nashik
Class : Class 5

Ans 5:

Sarthak Shome from Harvest International, Bangalore
Class : Class 8
I DIDNT KNOW THE ANSWER FIRST

Ans 6:

khushi from anandalaya, anand
Class : Class 5

Ans 7:

Arnav kaul from Chirec, Hyderabad
Class : Class 2
A because the others have more than one line of symmetry

Ans 8:

saumit from Narayana E-techno, mumbai
Class : Class 5
Even there are no endpoints to two lines of symmetry in A option. And the figure in o has option C has a very large diameter and has only one line of symmetry

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