International Maths Olympiad Forum By SOF Olympiad Trainer - Page 391
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Aarush Pandya from Inventure Academy, Bangalore
Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(C):

  • Time duration for playing football = 30 minutes

           Time duration for reading book = 30 minutes
           So, activities that last for 1 hour in total are
           playing football and reading book.

  • The activity that lasted for 15 minutes only is painting.

Ans 2:

DhritismanDas from Sfs, Guwahati
Class : Class 3

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Abhinha Ajay Ovhal from Podar International School, Latur
Subject :IMO    Class : Class 1

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Vedant Sharma from Silver Oaks , Hyderabad
Subject :IMO    Class : Class 7

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar
Subject :IMO    Class : Class 8

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar
Subject :IMO    Class : Class 8

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar
Subject :IMO    Class : Class 8

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar
Subject :IMO    Class : Class 8

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Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar
Subject :IMO    Class : Class 8

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veena from English medium school, loni
Subject :IMO    Class : Class 4

Ans 1:

Vihaan Binaykia from Riverside, AHMEDABAD
Class : Class 5

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is option D. 


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OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Subject :IMO    Class : Class 6

Ans 1:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9

Ans 2:

Satya from SM, Hyderabad
Class : Class 7

Ans 3:

Arnesh Chakraborty from M P Birla Foundation Higher Secondary School, KOLKATA
Class : Class 7
(B): ​​​​​​​Straight lines are :AB, BC, CM, AM, AL, AH, BJ, BD, LJ, LH, JD, KF, GE, ED, GH, FD, FH∴ Minimum number of straight lines = 17 (B): ​​​​​​​Straight lines are :AB, BC, CM, AM, AL, AH, BJ, BD, LJ, LH, JD, KF, GE, ED, GH, FD, FH∴ Minimum number of straight lines = 17 (B): ​​​​​​​Straight lines are :AB, BC, CM, AM, AL, AH, BJ, BD, LJ, LH, JD, KF, GE, ED, GH, FD, FH∴ Minimum number of straight lines = 17

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(B):  

​​​​​​​

Straight lines are :
AB, BC, CM, AM, AL, AH, BJ, BD, LJ, LH, JD, KF, GE, ED, GH, FD, FH
∴ Minimum number of straight lines = 17
 


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