International Maths Olympiad Forum By SOF Olympiad Trainer - Page 583
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Sanchit from Srs vidyapeeth , Samana
Subject :IMO    Class : Class 8

Ans 1:

sagar kumar from D A V public school , NOIDA
Class : Class 10
0 is both a number and the numerical digit used to represent that number in numerals. The number 0 fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems.

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Yash Bindal from Global Indian International School, Singapore
Subject :IMO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 2:

Adithya Ravi from National Centre For Excellence , Bengaluru
Class : Class 9

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Urvee Sarang Gokhale from Sri Sri Ravi Shankar Vidya Mandir, Pune
Subject :IMO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

1000 in roman numerals = M


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Shubhan from Euro School, Mumbai
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C

Number of detective books he read 
= 4 × 5 = 20.


Ans 2:

KALLOL PAL from TIGPS Mankundu , CHANDANNAGAR
Class : Class 9
20

Ans 3:

Prerna Singh from Loyola School, Jamshedpur
Class : Class 5
Ans. C (20)

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Shweta Garg from Vibgyor high, Vadodara
Subject :IMO    Class : Class 5

Ans 1:

Aarya Teja from Bharatiya Vidya Bhavans Public School, Hyderabad
Class : Class 6
(B) 17766 When 17766 is rounded to the nearest tens, it is 17770 When 17766 is rounded to the nearest hundreds, it is 178000 When 17766 is rounded to the nearest thousands, it is 18000 Therefore, 17766 agrees with all the rules and is the right answer.

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B - 17766 

Rounding off rounds off 17766 to the nearest thousand, you will get 18000.

Rounding off 17766  to the nearest hundred, you will get 17800.

And rounding off to the nearest ten, you will get 17770.


Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B

Ans 4:

Aarya Teja from Bharatiya Vidya Bhavans Public School, Hyderabad
Class : Class 6
(B) 17766 When 17766 is rounded to the nearest tens, it is 17770 When 17766 is rounded to the nearest hundreds, it is 178000 When 17766 is rounded to the nearest thousands, it is 18000 Therefore, 17766 agrees with all the rules and is the right answer.

Ans 5:

Smitha Pentyala from Ganges valley, Nizampet
Class : Class 5
B

Ans 6:

Aarav Gupta from Delhi Public School Bangalore East, Bangalore
Class : Class 4
Answer is B) 17766

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Priya Lalwani from Sophia Sr Sec School, Bikaner
Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is D.


Ans 2:

Sujal Shishodia from HAPPY SENIOR SECONDARY SCHOOL, Jind
Class : Class 10
D

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Smita Desai from GOKULDHAM HIGHSCHOOL , MUMBAI
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is D

 


Ans 2:

Arihaan Adhikari from Modern Delhi International School, Sector 87, Faridabad
Class : Class 8

Ans 3:

Aarush Pal from NPS International School, Singapore
Class : Class 3
The correct answer is D

Ans 4:

Nakul Bhasker from National Public School Whitefield, Bangalore
Class : Class 5

Ans 5:

Sayan Duary from Vidyasagar Shishu Niketan, Paschim Medinipur
Class : Class 8

Ans 6:

Arihaan Adhikari from Modern Delhi International School, Sector 87, Faridabad
Class : Class 8

Ans 7:

Mithi from G D BIRLA , Kolkata
Class : Class 2

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Shweta Garg from Vibgyor high, Vadodara
Subject :IMO    Class : Class 5

Ans 1:

JOIS GEORGE from Dimension, Singapore
Class : Class 5
Look Closely!!! its 15, include other triangles!!!!!

Ans 2:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
I still don’t understand how the answer is C. I got the answer as 14

Ans 3:

Irresh Vijay from NPSI Singapore, Singapore
Class : Class 8

Ans 4:

Risha Jakhotiya from Sanskriti School , Pune
Class : Class 3
Hey! 13 and 14 are not triangles!!!

Ans 5:

adhiraj from Gundecha Education Academy, Mumbai
Class : Class 5
The answer is A - 11

Ans 6:

from Delhi Public School Noida, GHAZIABAD
Class : Class 6

Ans 7:

Yash from Dps, Noida
Class : Class 7
they are counting 5 , 6 two times so that means that the answer is b 13

Ans 8:

Joe Bipin from National Public School Agra, Bangalore
Class : Class 10
answer is 15 c

Ans 9:

Prachi from Holy Child Public school, Faridabad
Class : Class 10
yes 13(b) is the correct answer. You have counted triangle 5 and 6 twice. What a hell it is.

Ans 10:

Nila Pillai from Chennai public School, Chennai
Class : Class 6
Answer is 15 not 13 Look closely!!!!

Ans 11:

Sharvi Deshmukh from BRPS, Pune
Class : Class 1
(B)13 is the correct answer

Ans 12:

PRAPTI BHATTACHARYA from St. Ann's School, ROORKEE
Class : Class 5
Correct answer is d-17

Ans 13:

Sarang Shete from Amanora School, Pune
Class : Class 8

Ans 14:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 9

Ans 15:

Mohammed Najl from Credence high school Dubai, Dubai
Class : Class 5
B is correct

Ans 16:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Watch out the solution . Then ya all will understand everything!!!!!!!Sab samajh jaaoge !!!!!!!!!

Ans 17:

Shweta Garg from Vibgyor high, Vadodara
Class : Class 8
teree to pit jaega

Ans 18:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
But I agree that the answer is B

Ans 19:

Yash from Dps, Noida
Class : Class 7
hey sorry that my first answer was wrong .....the correct answer is [c] 15 as they are counting the 13 , 14 as each half of the whole triangle

Ans 20:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6

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Anil sinha from DPS, Chandigarh
Subject :IMO    Class : Class 6

Ans 1:

Anil sinha from DPS, Chandigarh
Class : Class 4
Like this :- First we will remove 6 from the left side of the equation and add 6 on the right side this would bring this :- x +25+5=26 Then we will substract 25 from both sides ,this would bring this :- x + 5 = 1 Then we will substract 5 from both sides this will give us :- x = -4 ,so x = -4

Ans 2:

akshanjaswal from Modern Delhi International School, Faridabad
Class : Class 10
-4

Ans 3:

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

Ans 4:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
x =20+6-5-25= - 4. so, x = - 4

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Mani from eabhyas academy, Hyderabad
Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Kindly upload the image of the figure


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