International Maths Olympiad Forum By SOF Olympiad Trainer - Page 729
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Ryan Nishad from Credence high school , Dubai
Subject :IMO    Class : Class 4

Ans 1:

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

Ans 2:

Shobhon Prusty from The PSBB Millennium School, Chennai
Class : Class 4
nope einstein will say 35

Ans 3:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5
answer is A only

Ans 4:

Abhivir Samraj from Vaels International, CHENNAI
Class : Class 4

Ans 5:

Pratham Mehta from Shriram millenium school noida, NOIDA
Class : Class 6

Ans 6:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
Answer is A part

Ans 7:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
25 15=40A is the answer

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Shubh Anuj Jain from giis, Singapore
Subject :IMO    Class : Class 5

Ans 1:

Hritvi from Podar International School, Mumbai
Class : Class 7
letter E is also an symmetrical on horizontal axis.

Ans 2:

alpha century from sacred heart convent school, ludhiana
Class : Class 7
6 letters are symmetrical. Letters S, I, N, A, O, E

Ans 3:

Hritvi from Podar International School, Mumbai
Class : Class 7
letter E is also an symmetrical on horizontal axis.

Ans 4:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
I THINK IT IS A. E IS SYMMETRICAL. But Jyoti is also right

Ans 5:

Risha Jakhotiya from Indo Scott Global School, Pune
Class : Class 3
The answer should be 5!

Ans 6:

Dhruv samavedula from Euroschool Whitefield, Bengaluru
Class : Class 5
answer is 4 because they asked for atleast 1 symmetry line

Ans 7:

Ahoraatra Mondal from GOKHALE MEMORIAL GIRLS' SCHOOL, HOWRAH
Class : Class 4
EEEEEEEEEEEEEEEEE.....................!!!!!!!!!!???????????

Ans 8:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
Answer is a

Ans 9:

krishneil from Elpro international school, Pune
Class : Class 6
5- S,I,N,A,O

Ans 10:

aarav shankar from st xaviers high school, gurugram
Class : Class 8
No! Letter E is not symmetrical as the upper side of the E has lesser gap than that of its lower side. Therefore the ans is B.

Ans 11:

Adishree Nagre from Vibgyor High, Mumbai
Class : Class 5
O has infinate lines of symmetry, however in the question it has given „EXACTLY 2 lines of symmetry“

Ans 12:

Sanay Pathak from Hooghly, Hooghly
Class : Class 5
SOF Olympiad Trainer is wrong. Look carefully. E is symmetrical. I has horizontal line of symmetry

Ans 13:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 7
The answer shoud be B)1 because O has infinite lines of symmetry and also check the solution and stop being dumb.Also E has also 1 line of symmetry but SOF has given the question.Please read the queston carefully.And they have also given an image so 5 would not be the answer.MASTER ANSWER

Ans 14:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8
E is a symmetrical letter, but in this font it is not because of width on top and bottom

Ans 15:

Medhansh Sachdeva from Deens Academy, Bangalore
Class : Class 7
no its bstop being dumbits b because only i has two lines of symetryo has infinite lines of symetry this is a master answer stop writing 25 ans all were wrongask sof for help please!

Ans 16:

Bharat from Geetanjali Olympiad school, Bangalore
Class : Class 9
Guys Jyoti mehta from vibgyor high is correct because you see E the gapis lees in one and more in 2 one

Ans 17:

SHRADHA MOHAPATRA from APEEJAY SCHOOL, New Delhi
Class : Class 5
MASTER ANSWER!!!!!5 is correct because E also has a horizontal symmetrical line.

Ans 18:

Lakshana from SBOA School and Junior College, Chennai
Class : Class 6
S

Ans 19:

jitvika from fundus high school, karimnagar
Class : Class 5
5

Ans 20:

SHRADHA MOHAPATRA from APEEJAY SCHOOL, New Delhi
Class : Class 5

Ans 21:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
The answer is clearly 5=I,N,A,O,E

Ans 22:

virat varshney from Pawna International School , HATHRAS
Class : Class 7
1 will be the correct answer because O has infinite lines of symmetry and the question said that how many of the following figures have exactly 2 lines of symmetry. The perfect answer and explanation.

Ans 23:

Amal Amzath Ali from jss international school, dubai
Class : Class 7
I agree with Bharat and Jyoti... e isn't symmetrical

Ans 24:

NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Class : Class 9
Letter E is also symmetrical

Ans 25:

Vivaan gulati from NPS international , Singapore
Class : Class 5
HAS TO BE A

Ans 26:

Havish jale from CHIREC INTERNATIONAL SCHOOL, Hyderabad
Class : Class 6
I agree with virat

Ans 27:

SHOURYA JANA from Birla High School Mukundapur, Kolkata
Class : Class 6
Let's analyze each letter in the word "MOTIVATE" to determine if it has exactly two lines of symmetry:M: This letter has only one line of symmetry, which is a vertical line passing through the middle of the letter.O: This letter has an infinite number of lines of symmetry, as any line passing through its center will divide it into two identical halves.T: This letter has one line of symmetry, which is a horizontal line passing through the middle of the letter.I: This letter has two lines of symmetry, which are a vertical line passing through the middle of the letter and another passing from the top.V: This letter has one line of symmetry, which is a vertical line passing through the top of the letter.A: This letter has one line of symmetry, which is a vertical line passing through the middle of the letter.T: This letter has one line of symmetry, which is a horizontal line passing through the middle of the letter.E: This letter has zero lines of symmetry, as there is a small gap between the first top two horizontal lines and a big gap between the last two horizontal lines.Also, in the question, SOF has clearly mentioned "which have exactly two lines of symmetry" This line proves that we need to find such an answer which supports and goes in agreement with the question.Therefore, only one letter in the word "MOTIVATE" have exactly two lines of symmetry, which is the "I" letter.I request SOF to correct the answer and give us the missing mark.

Ans 28:

Lakshana from SBOA School and Junior College, Chennai
Class : Class 6
S and E are symmetrical but in this font it is not

Ans 29:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
I agree with Bharat and Jyoti, E is not symmetrical. I know that whenever we write E, like in the font in which I am writing now, it is symmetrical, but as per the question given, the font is different, and so, the letter E is not symmetrical. The curved gaps on top and bottom are very different and they are visible by the naked eye.

Ans 30:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
E has horizontal line of symmetry

Ans 31:

Yajat Manoj from Vibgyor, Bengaluru
Class : Class 5
how is N symmetrical!!!!!

Ans 32:

Shreyas Singh from Podar International School, Pune
Class : Class 6

Ans 33:

Arjun mehta from Vibgyor high , Mumbai
Class : Class 3
No dragonite you are wrong, only 5 letters in the word are symmetrical not 6 : I ,N, A, O, E

Ans 34:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
master . admmin to answer

Ans 35:

Radhika Gupta from Dps civil lines aligarh , Aligarh
Class : Class 8
Ans is 4

Ans 36:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
A , You all are right

Ans 37:

Gauransh Singla from DPS , Navi Mumbai
Class : Class 5
the answer is b - 5 = i,n,a,o,e

Ans 38:

Shubham Gautam from dpsnoida, Noida
Class : Class 5

Ans 39:

Harshil Jain from DPS, Bangalore
Class : Class 3
E is not symmetrical because if we see the gap the upper one has a small gap and the lower one has a large gap. That's why there is no symmetriy

Ans 40:

Arjun mehta from Vibgyor high , Mumbai
Class : Class 3
Oh E letter is not symmetrical because the gap between to curves is not exactly same focus on E

Ans 41:

Aaditya Hans from Lakshmipat Singhania Academy, KOLKATA
Class : Class 8
letter e is also symmetrical

Ans 42:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
it is 4 i n o and

Ans 43:

Yajat Manoj from Vibgyor, Bengaluru
Class : Class 5
55555!!!!!:(

Ans 44:

Lakshana from SBOA School and Junior College, Chennai
Class : Class 6
S

Ans 45:

Harshita Jain from CCA School, Gurugram
Class : Class 7

Ans 46:

Samanyu from NPSI, Singapore
Class : Class 5
Answer should be A

Ans 47:

adwitiya saxena from Ryan Internatinational School, Navi Mumbai
Class : Class 6
S has no line of symmetry, neither horizontal nor vertical ,and it cant be symmetrical by a slanting line.E is also not symmetrical by a horizontal line because the gaps are not equal between them as shown in the picture

Ans 48:

Shaina Mukherjee from DPS Sharjah, Dubai
Class : Class 5
Sure shot...... all the 5 letters - I,N,A,O,E... All these letters are symmetrical.... Wrong answer uploaded by the website..... Dissapointed....

Ans 49:

Ishan Boggarapu from NPS Whitefield, Bangalore
Class : Class 7
How r we supposed to know such a small difference E is symetrical

Ans 50:

Anirudh Bagri from AMNS, Mumbai
Class : Class 7
0 alphabets of *exact* two lines of symetry

Ans 51:

Shreyas Joshi from New Horizon Public School, Bengaluru
Class : Class 7
its true.answer should be six !!!

Ans 52:

krishneil from Elpro international school, Pune
Class : Class 6
Answer should be A. S is symmetrical.

Ans 53:

varishtha from nps, banglore
Class : Class 5

Ans 54:

Harsh Shukla from DPS Bangalore East, Bengaluru
Class : Class 9
options are wrong.6 is the answer

Ans 55:

Aryav Gupta from BomBay Scottish Mumbai, Mumbai
Class : Class 7

Ans 56:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
yes this sof is really bad and mad

Ans 57:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai
Class : Class 6
We need letters with EXACTLY TWO (2) lines of symmetry. Although "O" has infinite lines of symmetry, LOOK CLOSE WITH YOUR EYES PEELED, it is an oval shape, so only 2 lines.

Ans 58:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
this doesn't make sense E is also symmetrical

Ans 59:

varishtha from nps, banglore
Class : Class 5

Ans 60:

Deep Ajay Ovhal from Podar International School, Latur, Latur
Class : Class 7
Wrong question the answer is 5

Ans 61:

Aahana s from Tatva global school, Hyderabad
Class : Class 5

Ans 62:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
Its b!

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Nitish Reddy Lingala from Deens Academy, Bangalore
Subject :IMO    Class : Class 9

Ans 1:

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

Ans 2:

Nithanth devadas from KV KARANJA, Navi mumbai
Class : Class 10

Ans 3:

devikp from dps,sharjah, Chennai
Class : Class 5

Ans 4:

Jaiman singh from The Mothers international school, New delhi
Class : Class 9
can anybody please send me the written solution of the question ?

Ans 5:

Krishita from Unicentbachupally, Hyderabad
Class : Class 9

Ans 6:

Owi shamsundar bartakke from Shrimant maisaheb bavdekar academy, Kolhapur
Class : Class 9

Ans 7:

Aditi from Salt Lake School, Kolkata
Class : Class 9
Can anybody please post the written solution of this sum?

Ans 8:

Akshaj Malpani from Indira national school, Pune
Class : Class 8

Ans 9:

Shaina Vanessa from Frank Antony Public School, Bangalore
Class : Class 9

Ans 10:

snigdha from national hill view public school, Bengaluru
Class : Class 9

Ans 11:

mandar vaidya from PODAR INTERNATIONAL SCHOOL, aurangabad
Class : Class 9
HInt Hint: Square and square root the first term and for the second term write it in the form of (root2-1)^2 Then the final answer comes 1 '

Ans 12:

Nipun Abhilash from National Public School, Banashankhari, Bangalore
Class : Class 9
First Term= square and square root = root 2Second term = square root of (root2 -1)^2 = root2 -1The difference of first and second term = 1

Ans 13:

subhanga from dps numaligarh, golaghat
Class : Class 9

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RIYA D MARGHADE from TVS VELAMMAL VIDYALAYA PONNERI, CHENNAI, CHENNAI
Subject :IMO    Class : Class 1

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Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A. There are 9 circles as well as triangles.

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Yashashree Somdatta Kulkarni from Delhi Public School, Nashik
Subject :IMO    Class : Class 4

Ans 1:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 9
ANSWER MUST BE OPTION D , AS WHEN WE SUBTRACT 5/8 FROM 4 THEN WE WILL GET 27/8 WHICH IS EQUAL TO 3 3/8. THE METHOD IS BY DOING CRISS-CROSS MULTIPLICATION.

Ans 2:

jiya zaveri from inventure academy , bengaluru
Class : Class 4
how can it be c///

Ans 3:

from Bhavans, Hyderabad
Class : Class 7
c

Ans 4:

Aananya Singh from DPS East, Bangalore
Class : Class 4

Ans 5:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
How is it C C C ??????

Ans 6:

Devansh Gupta from Ridge Valley School, Gurgaon
Class : Class 6
I agree D should be answer. 4 - 5/8

Ans 7:

Goutham from lt, Chennai
Class : Class 4
(Master answer) the correct answer is C.

Ans 8:

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

Ans 9:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
b is the right answer.FIRST CUT THE DENOMINATOR.THEN CONVERT IT INTO A MIXED FRACTION.YOU WILL GET THE ANSWER

Ans 10:

Aananya Singh from DPS East, Bangalore
Class : Class 4
I think it should be option C as , the question is asking how much is left with her when she has baked. She used 5/8 of the flour to bake and 5/8 of 4kg is 2 ½ kg . 4kg take away 2½ kg equals 1½ kg. So it should be option C.

Ans 11:

IAMLOST from ABC, Pune
Class : Class 8

Ans 12:

IAMLOST from ABC, Pune
Class : Class 8
everyone is right

Ans 13:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
The correct answer is c

Ans 14:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Hi Mridul you are right you know I was in Shishukunj for 2 years D D D D D Master Answer explain as this question may come in IMO IMO IMO

Ans 15:

IAMLOST from ABC, Pune
Class : Class 8

Ans 16:

AHELI CHAKRABARTI from BGS INTERNATIONAL PUBLIC SCHOOL, DWARKA
Class : Class 4
the answer is either B or C

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Tanish Chudiwal from Amanora school , Pune
Subject :IMO    Class : Class 7

Ans 1:

Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai
Class : Class 9
It think this is a problem with the code. It worked properly for me. If you are facing further problems you can report the question. P.S- I am not part of the technical team.

Ans 2:

Roushan Raj from ccl dav giridih , giridih
Class : Class 7
Option A

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Chiran Shunmugam from NPS International, Singapore
Subject :IMO    Class : Class 9

Ans 1:

pratham garg from delhi public school, chandigarh
Class : Class 10
240 grams

Ans 2:

Rudra kumar from Jawahar Navodaya vidyalaya, Sherghati
Class : Class 9
The seven pieces consist of 6 smaller equal pieces and one half cake piece. Weight of each small piece = 20 g. So, total weight of the cake = [2 x (20 x6)]g= 240 g.

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Amal Sumesh from Adani Public School, Mundra
Subject :IMO    Class : Class 7

Ans 1:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7
77 is correct answer.

Ans 2:

Shankar Eswarakumar from NPS International, Chennai
Class : Class 8

Ans 3: (Master Answer)

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

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Amal Sumesh from Adani Public School, Mundra
Subject :IMO    Class : Class 7

Ans 1:

Kaushik Srivatsa H from Bala Vidya Mandir Global, Bangalore
Class : Class 7

Ans 2:

TANUJA JOSHI from ZYDUS SCHOOL FOR EXCELLANCE, Ahmedabad
Class : Class 7
ANSWER IS 13. FROM PATTERN 1 WE GET TO KNOW THAT THE PRODUCT OF SQUARE 1 AND 2 SUBTRACTED BY THE THIRD GIVES OUT THE NUMBER IN TRIANGLE.FOR INSTANCE, 5*4-8=12 3*5-4=11 4*5-7=13.

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