International Maths Olympiad Forum By SOF Olympiad Trainer - Page 652
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bhavya garg from la bloosom school , jalandhar
Subject :IMO    Class : Class 5

Ans 1:

Ansh from Delhi Public School Bopal, Ahmedabad
Class : Class 8
D)

Ans 2:

Shrutika Hota from St.johns school, Sambalpur
Class : Class 5
ANS- D

Ans 3:

VATSAL.KHANDELWAL.5C.dpsn from DPS NOIDA, NOIDA
Class : Class 5
An angle has 3 letters .Answer should be both c and d

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Bhavika Rakesh from VIBGYOR HIGH BALEWADI, Pune
Subject :IMO    Class : Class 8

Ans 1:

Sachin from Zvsvdv, Xggxhd
Class : Class 7
D

Ans 2:

Maneesh Manoj from Podar International, Nagpur
Class : Class 9
Your answer is wrong. If the angle is 45, the direction will be south-west.for north-west, angle should be 135.

Ans 3:

Maneesh Manoj from Podar International, Nagpur
Class : Class 9
Your answer is wrong. If the angle is 45, the direction will be south-west.for north-west, angle should be 135.

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

Ans 1:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3

Ans 2:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3

Ans 3:

Samir Ruparelia from RSKP, Junagadh
Class : Class 3
A

Ans 4:

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

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

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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:

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

Ans 2:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
In the figure 'cm' is written, the solution has 'm' in it. SOF please correct it to avoid confusion.

Ans 3:

KUSHAGRA BANSAL from ST PAULS SCHOOL , Udaipur
Class : Class 6
The answer is C.

Ans 4:

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 5:

divish from Delhi Public School, gurgaon
Class : Class 5

Ans 6: (Master Answer)

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

Ans 7:

Shamvabi Samanta from Gitanjali Primary School,ICSE, Hyderabad
Class : Class 9
Question has been formed wrongly in terms of unit of measurement as all areas should either be in cm or in m.

Ans 8:

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

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

Ans 1:

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 2:

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

Ans 3:

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

Ans 4:

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 5:

from kalyan, Kalyan
Class : Class 6

Ans 6:

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 7:

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

Ans 8:

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

Ans 9:

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 10:

Tejas Agarwal from Prudence School , New Delhi
Class : Class 10
I agree with answer 14

Ans 11:

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

Ans 12:

Akshaj V from PSBB Senior Secondary School, Chennai
Class : Class 6

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

Shreyas Vinod from EUROSCHOOL WHITEFIELD, BANGALORE
Class : Class 9
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 18:

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

Ans 19:

Dhruva from VSSIPS, Bangalore
Class : Class 8
Option A

Ans 20:

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 21:

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

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

Ans 1: (Master Answer)

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

Ans 2:

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

Ans 3:

J Srinidhi from narayana, Hyderabad
Class : Class 7
The correct answer is B.

Ans 4:

J Srinidhi from narayana, Hyderabad
Class : Class 7

Ans 5:

J Srinidhi from narayana, Hyderabad
Class : Class 7
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:

Kavya Kaskar from Arya Vidya Mandir- Juhu, MUMBAI
Class : Class 5

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:

Krittibas Bhattacharjee from Achiever's Academy , Bangalore
Class : Class 6
easy

Ans 5:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7
IT'S A BIT HARD

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