International Maths Olympiad Forum By SOF Olympiad Trainer - Page 499
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sunil agrawal from DPS chandigarh, Mohali
Subject :IMO    Class : Class 7

Ans 1:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8

Ans 2:

aadityaarmaan from KVS Chabua, Dibrugarh
Class : Class 3

Ans 3:

aadityaarmaan from KVS Chabua, Dibrugarh
Class : Class 3

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Garv Agarwal from Somerville School Noida, Noida
Subject :IMO    Class : Class 6

Ans 1:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 7
3 ∠A = 4 ∠B = 6 ∠CL.C.M. of 3, 4 and 6 = 12We know, ∠A ∠B ∠C =180°12 ∠A 12 ∠B 12 ∠C = 12 × 180°12 ∠A 3 (4 ∠B) 2 (6 ∠C) = 12 × 180°12 ∠A 3 (3 ∠A) 2 (3 ∠A) = 12 × 180°12 ∠A 9 ∠A 6 ∠A = 12 × 180°27 ∠A = 12 × 180°∠A = 12 × 180° / 27 = 80°∠B = 3⁄4 ∠A = 3⁄4 of 80° = 60°∠C = 3⁄6 ∠A = 1⁄2 of 80° = 40°Therefore, ∠A ∠B - 3 ∠C = 80° 60° - 3 × 40°= 140° - 120°= 20°Answer-(C) 20°

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from ,
Subject :IMO    Class : Class 8

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kashvi shirudkar from bharti vidyapeeth rabindranath tagore school of excellence, pune
Subject :IMO    Class : Class 4

Ans 1:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7
B

Ans 2:

Likhith from Sriram school of CBSE, Hyderabad
Class : Class 4
B

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Dishamrutha from indian school of excellence, bangalore
Subject :IMO    Class : Class 5

Ans 1:

Arunava hury from KV1 saltlake , Kolkata
Class : Class 6
D

Ans 2:

Dishamrutha from indian school of excellence, bangalore
Class : Class 6
The correct answer is 3

Ans 3:

Arunava hury from KV1 saltlake , Kolkata
Class : Class 6
D

Ans 4:

Arunava hury from KV1 saltlake , Kolkata
Class : Class 6
D

Ans 5:

Arunava hury from KV1 saltlake , Kolkata
Class : Class 6
D

Ans 6:

Arunava hury from KV1 saltlake , Kolkata
Class : Class 6
D

Ans 7:

Lokesh Krishnan from Pon Vidyashram School, CHENNAI
Class : Class 7
D)1

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Kashish Kathuria from Delhi Public School, Bangalore
Subject :IMO    Class : Class 6

Ans 1:

from , Lucknow
Class : Class 7
this answer should be c

Ans 2:

Nayanaa Gupta from MVN Aravali Hills, Faridabad
Class : Class 6
Answer should be B.

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Pranshu Singh from Centre point , Nagpur
Subject :IMO    Class : Class 8

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Pranshu Singh from Centre point , Nagpur
Subject :IMO    Class : Class 8

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Aajani Datta from The Samhita Academy, Bangalore
Subject :IMO    Class : Class 4

Ans 1:

Vansh Biyani from Vibgyor high, Mumbai
Class : Class 4
help

Ans 2:

Vansh Biyani from Vibgyor high, Mumbai
Class : Class 4
the correct answer is b

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Mrigank Roy from Delhi Public School Ghaziabad, Ghaziabad
Subject :IMO    Class : Class 4

Ans 1:

Meera Angela B Pai from The Choice School, Thripunithura
Class : Class 4
solution is wrong versus correct answer=c.

Ans 2:

Ayan Azad from Genesis Global School, Noida
Class : Class 4
The correct answer is C. If you see the question, it says " 5/8 OF IT" which means 5/8 of 4kg, which is 2 1/2kg. So, the answer is 4kg - 2 1/2kg which is 1 1/2kg. wrong solution given though.

Ans 3:

Meera Angela B Pai from The Choice School, Thripunithura
Class : Class 4
answer is C but this is advance for class 4. it would have been better if "5/8 kg" was used. and then the answer would be letter "D".

Ans 4:

Naman from DPS BALLABGARH , Ballabgarh
Class : Class 4

Ans 5:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
The given answer is wrong but solution is correct

Ans 6:

Shailaja Divakar from Chennai public school global school, London
Class : Class 6
The answer is C. We have to multiply 20 with 4 and divide it with 5. The answer will be 2.5. Now subtract 4 from 2.5. The answer will 1.5 or 1and a half.

Ans 7:

Aditya Prasad Samant from ,
Class : Class 4
Answer is wrong so option D

Ans 8:

Samriddh Pujahari from Whitefield Global School , Bangalore
Class : Class 4
d

Ans 9:

Darsh Maheshwari from Lexicon international school kalyani nagar , Pune
Class : Class 4
Answer should be D. Solution also says its D but answer in system is 'C' which is incorrect.

Ans 10:

Shailaja Divakar from Chennai public school global school, London
Class : Class 6

Ans 11:

satvik from dps, mangalore
Class : Class 3
D

Ans 12:

lekhaj from NARAYANA, VISAKHAPATNAM
Class : Class 4
C

Ans 13:

Shreyaan Tamhane from DSRV, Mumbai
Class : Class 5

Ans 14:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Answer is D 4-5/8=3 3/8 calculate it : 3 3/8 5/8 = 3 8/8 = 4 as 8/8 is 1 whole SIMPLE LOGIC they have given correct solution but the correct answer as provided by SOF is wrong OPTION C IS WRONG and there is simple logic behind it

Ans 15:

Kartavya from DPS WhiteField, Bangalore
Class : Class 4
TOTAL FLOUR = 4KG USED FOR BAKING = 5/8 x 4 = 20/8 = 10/4=5/2THEREFORE FLOUR LEFT =TOTAL FLOUR MINUS USED= 4 - 5/2 =8 - 5/2 = 3/2= 1 1/2 HENCE C IS CORRECT ANSWER

Ans 16:

Sourish Samanta from Asian International School, Howrah
Class : Class 5
Answer will be C but the solution is totally wrong. Not 5/8 kg, but 5/8 of 4 kg was consumed

Ans 17:

Hardik from Dasmesh public school kotkapura, Kotkapura
Class : Class 4
Answer is D

Ans 18:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7

Ans 19:

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

Ans 20:

Naman from DPS BALLABGARH , Ballabgarh
Class : Class 4
Answer is D option

Ans 21:

Aryan Panigrahi from VIBGYOR HIGH, Pune
Class : Class 4

Ans 22:

Naman from DPS BALLABGARH , Ballabgarh
Class : Class 4

Ans 23:

dveep jain from mindful gurukul, Mumbai
Class : Class 4
Answer is D

Ans 24:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
The question answer is 4-5/8 .That means 4/1-5/8= 27/8= 3⅜.So the answer is D.

Ans 25:

Atharv Rai from The Foundation School , Bangalore
Class : Class 4
is d

Ans 26:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5

Ans 27:

Saarang roy from Indian school ghubra, Muscat
Class : Class 6
the correct answer is c because 4 kg =4000 g and 5/8 of it is 2500 g and the question is how much does she have left so it is 4000-2500=1500= 1 1/2

Ans 28:

Saanvi Guglani from DPS Navi Mumbai, Navi Mumbai
Class : Class 7
The correct ans is D 11/2 KG because of the word of in the question

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