International Maths Olympiad Forum By SOF Olympiad Trainer - Page 574
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neel niharika from JPHS , Jaipur
Subject :IMO    Class : Class 3

Ans 1:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3
A

Ans 2:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3

Ans 3:

shadman khan from international school guwahati, Guwahati
Class : Class 4
A

Ans 4:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3

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neel niharika from JPHS , Jaipur
Subject :IMO    Class : Class 3

Ans 1:

Moksh Miglani from BRIGHT AVENUE SCHOOL, JAKHODA, BAHADURGARH
Class : Class 3
C 24

Ans 2:

shadman khan from international school guwahati, Guwahati
Class : Class 4
C

Ans 3:

shadman khan from international school guwahati, Guwahati
Class : Class 4
C

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Dikshant ojha from Arya Gurukul, kalyan
Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
It has been assumed to be 72 Kg. It is a hypothetical situation.

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :IMO    Class : Class 5

Ans 1:

divish from Delhi Public School, gurgaon
Class : Class 5
all should be in cm or m question is wrong or else the answer is (d),(C),(a),(b)

Ans 2:

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

Ans 3:

NIRMAY JOSEPH from St Columba's School, New Delhi , New Delhi
Class : Class 9
everything is written in centimetre not in metre.

Ans 4:

Shamvabi Samanta from Gitanjali Primary School,ICSE, Hyderabad
Class : Class 7
Question has been formed wrongly in terms of unit of measurement as all areas should either be in cm or in m.

Ans 5: (Master Answer)

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

Ans 6:

KUSHAGRA BANSAL from ST PAULS SCHOOL , Udaipur
Class : Class 5
The answer is C.

Ans 7:

divish from Delhi Public School, gurgaon
Class : Class 5

Ans 8:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
In the figure 'cm' is written, the solution has 'm' in it. SOF please correct it to avoid confusion.

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :IMO    Class : Class 5

Ans 1:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
option d according to SOF but it should be option c as it has said for the knots. The word ''knots'' is in plural form which means there are many knots which means it will be a l the knots counted

Ans 2:

Shreyas Vinod from EUROSCHOOL WHITEFIELD, BANGALORE
Class : Class 7
Answer should be Option C, not D, because 2 meter for knots is mentioned. It is not mentioned that 2 m is required for each knot.

Ans 3:

Dhruva from VSSIPS, Bangalore
Class : Class 8
118 sq.cm

Ans 4:

Samarth Sabari from GIIS, Singapore
Class : Class 9
All knots or each knot?

Ans 5:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question but it is showing that D is the answer. Master answer required

Ans 6:

Tejas Agarwal from Prudence School , New Delhi
Class : Class 9
I agree with answer 14

Ans 7:

from kalyan, Kalyan
Class : Class 6

Ans 8:

TANVI DAS from GAIL DAV Public School , Dibiyapur
Class : Class 8
Answer is D, because 2m for EACH knot, so multiplying by 4 gives 8. Then adding to 120 gives answer 128. As this answer is not in options A, B and C, answer is D, none of these

Ans 9:

Dhruva from VSSIPS, Bangalore
Class : Class 8
Option A

Ans 10:

Siddarth Rastogi from Greenwood High Int'l School, Bangalore
Class : Class 5
Answer: 128Explanation:Perimeter = 30 x 4 = 120Space for knots = 2 x 4 = 8 (each knot = 2m)Total (answer) = 30 x 4 2 x 4 = 128 m 128 > 120, 118 or 122 so option D. None of these is the correct option

Ans 11:

Aditri Sultania from RBK Global School, Mumbai
Class : Class 5
In the question it is written 2m for knots, which means 122m of rope is required. If it would be given 2m for each knot then the answer is 128m.

Ans 12:

YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Class : Class 8

Ans 13:

Dhruva from VSSIPS, Bangalore
Class : Class 8
118 sq.cm

Ans 14:

from kalyan, Kalyan
Class : Class 6
The answer is (D)

Ans 15:

Rudra Tripathi from DPS Noida, Noida
Class : Class 10
The answer is A

Ans 16:

Kurma Krishna chaitanya from Defence Laboratory School RCI, Hyderabad
Class : Class 7
128 sq cm

Ans 17:

Gaurav Gupta from DPS International Gurgaon, Gurgaon
Class : Class 5
Answer is C: 122. It says 2m is required for tying the "knots" which means 2m is the total length consumed the all knots. Had it said that 2m is required for each knot then the answer would be 128m.

Ans 18:

Dhruva from VSSIPS, Bangalore
Class : Class 8
None of these

Ans 19:

Raaya Acharya from Kendriya Vidayala DRDO, BANGALORE
Class : Class 5
c

Ans 20:

Shivsnsh from aps, udhampur
Class : Class 6
Ans is 122 (4×30=120 2=122

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :IMO    Class : Class 5

Ans 1:

J Srinidhi from narayana, Hyderabad
Class : Class 6

Ans 2:

J Srinidhi from narayana, Hyderabad
Class : Class 6
The correct answer is B.

Ans 3: (Master Answer)

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

Ans 4:

Harini Srinivasan from Air Force School Hebbal, Bengaluru
Class : Class 8
answer is b

Ans 5:

J Srinidhi from narayana, Hyderabad
Class : Class 6
SolutionArea of larger rectangle = (22 × 8) sq. cm= 176 sq. cmArea of unshaded rectangle = (7 × 6) sq. cm= 42 sq. cmArea of square = (4 × 4) sq. cm = 16 sq. cm∴ Area of shaded region= 176 sq. cm – (42 16) sq. cm= 118 sq. cm

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sasthree from Jain Heritage Kondapur, Hyderabad
Subject :IMO    Class : Class 4

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Gireesha from innocent hearts school jalandhar, Jalandhar
Subject :IMO    Class : Class 4

Ans 1:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 6
IT'S A BIT HARD

Ans 2:

Aryan Jain from greenwood high, Bangalore
Class : Class 5
A-26

Ans 3:

Dhruva from VSSIPS, Bangalore
Class : Class 8
26

Ans 4:

Kavya Kaskar from Arya Vidya Mandir- Juhu, MUMBAI
Class : Class 4

Ans 5:

Krittibas Bhattacharjee from Achiever's Academy , Bangalore
Class : Class 4
easy

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Akshita aswal from Tender heart school, Chandigarh
Subject :IMO    Class : Class 6

Ans 1:

T Chiranjeevi from AKG Public School, Chennai
Class : Class 8
the answer should be B because if we multiply we will get the same answer this is my comment

Ans 2: (Master Answer)

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

Ans 3:

Arun Kumar Dash from K V Khurda Road, khurda
Class : Class 6

Ans 4:

Ananya Tiwari from Sapphire International School, Ghaziabad
Class : Class 7

Ans 5:

Kaustubh varikallu from South Forsyth Middle School, Atlanta
Class : Class 7

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tanishka Bondhare from Saraswati international school , Hingoli
Subject :IMO    Class : Class 8

Ans 1: (Master Answer)

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

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