International Maths Olympiad Forum By SOF Olympiad Trainer - Page 378
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Maneet chavan from DPES , pune
Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Where is moderator?? I'ts important. Regards.

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Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Subject :IMO    Class : Class 7

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Nipun Abhilash from National Public School, Banashankhari, Bangalore
Subject :IMO    Class : Class 8

Ans 1:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
In the solution box it is given that option A is correct but under the question it is given solution D is correct, I think it is a technical glitch.

Ans 2:

Nipun Abhilash from National Public School, Banashankhari, Bangalore
Class : Class 9
A

Ans 3:

Akshaj Malpani from Indira national school, Pune
Class : Class 8
its a bcoz statement 1 is true and 2 is false

Ans 4:

Bhumika from prudence, New Delhi
Class : Class 9

Ans 5:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8

Ans 6:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA
Class : Class 10

Ans 7:

Joahanna Gabriel from Christwood school, Chennai
Class : Class 9

Ans 8:

Parth Chaudhari from Podar International School, Pune
Class : Class 3
D

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Sanaya Singh from Hiranandani Foundation, Mumbai
Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(B): The number more than 400 but less than 500 present on the tree is 475.


Ans 2:

Advik Dubey from Ramagya School, Noida
Class : Class 7
Answer would be c

Ans 3:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7
The number is 475 and 475 is in the answer B.So, the answer is B.

Ans 4:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7

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Kashish Kathuria from Delhi Public School, Bangalore
Subject :IMO    Class : Class 7

Ans 1:

Kashish Kathuria from Delhi Public School, Bangalore
Class : Class 9
why is not there any solution

Ans 2:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Answer is B.. You can find it by finding the third answer.. circumference of minute hand's path = 2x3.14x15 = about 94..

Ans 3:

Rachit Ghivari from HIS, Hubli
Class : Class 7
answer is B

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Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Subject :IMO    Class : Class 7

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Nipun Abhilash from National Public School, Banashankhari, Bangalore
Subject :IMO    Class : Class 8

Ans 1:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
There is a small error here

Ans 2:

Arya Sur from Calcutta Boy's School, Kolkata
Class : Class 7
90-v, slight printing error

Ans 3:

Nikasha Parashar from Sanskriti, New Delhi
Class : Class 8

Ans 4:

Aditi Saha from Bishops KalyaniNagar, Pune
Class : Class 4
agree

Ans 5:

Vineet Agarwal from DPS, Gurgaon
Class : Class 5
The answer should be d but the option is written wrong it should be 90-v not 90 v so i hope you get it

Ans 6:

Vibha from NPS , Singapore
Class : Class 5

Ans 7:

Vibha from NPS , Singapore
Class : Class 5

Ans 8:

Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Class : Class 8
90 - v not 90v

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Tejashree Colvalcar from Sharda Mandir School, PANAJI GOA
Subject :IMO    Class : Class 8

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Prathamesh Raje from DPS Electronic City, Bangalore
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Let Cost price be ‘x’.
Selling price = x – 15% of x = 85x /100
85x /100 = 1275
So, x(cost price) = 127500/85 = Rs. 1,500
So, new selling price = 1500 + 10% of 1500
= 1500 + 150 = Rs. 1650
Answer-(D) Rs 1650


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Ashwak from Cambridge, Jalandhar
Subject :IMO    Class : Class 6

Ans 1:

Yashraj from pps, pune
Class : Class 6
they are cheaters.i did c and they said i did b

Ans 2:

Pranya Gupta from Delhi Public School Ghaziabad Vasundhara, Ghaziabad
Class : Class 6

Ans 3:

Punya Paras Sundrani from Anand Niketan , Ahmedabad
Class : Class 7
ccccccccccccccccccccccccc

Ans 4:

Vedant Afre from City Pride School, Pune
Class : Class 10

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(C): It is given that,
Area of rectangle = Area of square
⇒ l × b = side × side
Also, length of rectangle = perimeter of square


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