International Maths Olympiad Forum By SOF Olympiad Trainer - Page 372
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Aardev from Choithram School Manik Bagh, Indore
Subject :IMO    Class : Class 9

Ans 1:

q from s, v
Class : Class 9
It is 74 itself. Think of it like this: You have Rs. 9.7 with you and you want to buy as many chocolates as possible. In such a case, you can buy only 4 chocolates, as you are short of Rs. 0.3. Dividing 9.7 by 2 gives 4.85 that can be approximated to 5, which is wrong as 5 chocolates require Rs. 10 (you need Rs. 0.3 more). So, you can use the amount less than or equal to what you have with you.

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Akshat from BRIGHTON INTERNATIONAL SCHOOL, RAIPUR
Subject :IMO    Class : Class 5

Ans 1:

Sonakshi from APS Bolarum, Secunderabad
Class : Class 5

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is option B. 


Ans 3:

Sarvottam Nayak from Kendriya Vidyalaya, Nagpur
Class : Class 6
The correct ans is C

Ans 4:

Sonakshi from APS Bolarum, Secunderabad
Class : Class 5
Hi

Ans 5:

Chinmay Goyal from Gems Modern Academy, Gurgaon
Class : Class 5
how

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Yug from Vibgyor, Pune
Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(B): 68 < 70 < 75 < 86
Therefore, doll in option (B) has the minimum cost.


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Prateek Sethi from DAV PUBLIC SCHOOL NTPC TTPS THERMAL, THERMAL
Subject :IMO    Class : Class 3

Ans 1:

Rohith from Hindustan international school, Chennai
Class : Class 4
1/31/3

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(D): Number of pages Monika read = (1/3) x total number of pages

                                                        = (1/3) x 48 = 16

 


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sankerths s from Shishya BELM public School, Bangalore
Subject :IMO    Class : Class 5

Ans 1:

Keshav from Step by step school sawai madhupur, Sawai madhopur
Class : Class 7

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(A): We have,
1567.79 × 100 + 634.76 × 100 -? = 110255
⇒ 156779 + 63476 -? = 110255
 ? = 110000
= 1.1 × 100000


Ans 3:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 7
We have,1567.79 × 100 634.76 × 100 -? = 110255⇒ 156779 63476 -? = 110255 ? = 110000= 1.1 × 100000

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Aadvik saini from Mvn sector 17, Faridabad
Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(A): Number of students appeared in Hindi exam 
= 50
Number of students appeared in Science exam 
= 40
So, required fraction = 


Ans 2:

Sargun Maini from The Khaitan School, NOIDA
Class : Class 6

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Akash Mukhoti from Hiranandani Foundation School, Powai , Mumbai
Subject :IMO    Class : Class 6

Ans 1:

PRANAB KUMAR from MARIAS PUBLIC SCHOOL, Guwahati
Class : Class 6
OPTION A

Ans 2:

Prabhav Akar from Cambridge Court High School, Jaipur
Class : Class 1
It should be zero if they all are parallel.

Ans 3:

Aryav Gupta from BomBay Scottish Mumbai, Mumbai
Class : Class 6
0 if they r parellel

Ans 4:

Aryav Gupta from BomBay Scottish Mumbai, Mumbai
Class : Class 6

Ans 5:

Rajendra Karwasra from BDIS, Sri Ganganagar
Class : Class 6
OPTION A

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Kushal from Chirec, Hyderabad
Subject :IMO    Class : Class 7

Ans 1:

Shaman Amin from SDM school, Mangalore
Class : Class 10
According to me answer should be D

Ans 2:

AADHYA AGRAWAL from VIBGYOR HIGH, MUMBAI
Class : Class 8

Ans 3:

Ishaan from ST. JUDE, Kerala
Class : Class 7

Ans 4:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
B is the answer

Ans 5:

Deepak Iyer from HFS Powai, Mumbai
Class : Class 7

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Krisha from gurukul, pune
Subject :IMO    Class : Class 2

Ans 1:

Krisha from gurukul, pune
Class : Class 1
you are poty

Ans 2:

Gaurika Bhasin from Genesis global school, Noida
Class : Class 2
Cost of 2 clocks = 2 x 97 = Rs 194Cost of 2 clocks and a watch = Amount he gave to cashier - Amount he received as change = 250 - 12 = 238Cost of watch = 238 – 194 = Rs 44Close

Ans 3:

Gaurika Bhasin from Genesis global school, Noida
Class : Class 2
Ignore

Ans 4:

Gaurika Bhasin from Genesis global school, Noida
Class : Class 2
Cost of 2 clocks = 2 x 97 = Rs 194Cost of 2 clocks and a watch = Amount he gave to cashier - Amount he received as change = 250 - 12 = 238Cost of watch = 238 – 194 = Rs 44Close

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Krisha from gurukul, pune
Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(B): Number of hours Reema works = 9 hrs ( 1pm - 10pm )
Amount she earns altogether = 8+8+8+8+8+8+8+8+8 = Rs 72


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