International Maths Olympiad Forum By SOF Olympiad Trainer

Champ from Reliance Foundation School, Mumbai

Subject :IMO Class : Class 7

The ratio of the number of stamps Harsh collected to the number of stamps Gaurav collected was 5 : 7. If Gaurav collected 32 more stamps than Harsh, then how many stamps did they collect altogether?

A192
B196
C214
D246

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Ans 1:

Aman Saji from Indian School,Sohar,Sultanate of Oman., Sohar

Class : Class 6

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Champ from Reliance Foundation School, Mumbai

Subject :IMO Class : Class 7

Find the area of the shaded part in the square.

A48 cm²
B52 cm²
C58 cm²
D64 cm²

please answer with explanation

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Ans 1:

Varnit khurana from Saint kabir school, Hissar

Class : Class 7

As the length of side of square is 8 cm ,so it's area will be 8×8cm which is equal to 64 sq. cm.Now ,to find the area of triangle,i.e. the unshaded area ,we have to apply the formula of (1\2×base×height).Now the base is equal to the length of the side of square I.e. 8cm and the height is 3cm.Now the area of triangle is (1\2×8×3)cm =12cm.Now we have to subtract the unshaded area from the area of whole square I.e. 64 sq.cm-12 sq.cm =52sq.cm.So the answer is option B.

Ans 2:

Varnit khurana from Saint kabir school, Hissar

Class : Class 7

As the length of side of square is 8 cm ,so it's area will be 8×8cm which is equal to 64 sq. cm.Now ,to find the area of triangle,i.e. the unshaded area ,we have to apply the formula of (1\2×base×height).Now the base is equal to the length of the side of square I.e. 8cm and the height is 3cm.Now the area of triangle is (1\2×8×3)cm =12cm.Now we have to subtract the unshaded area from the area of whole square I.e. 64 sq.cm-12 sq.cm =52sq.cm.So the answer is option B.

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Adnan Sathik from Birla Public School , CHENNAI

Subject :IMO Class : Class 3

If day before yesterday was Sunday, then day after tomorrow will be _____.

A Tuesday
B Thursday
C Friday
D Wednesday

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Ans 1:

Vivaan Pathak from Prudence School , Ashok Vihar, Delhi

Class : Class 4

B Question

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tanmay srivastava from DPS Noida, Noida

Subject :IMO Class : Class 4

Fill in the blanks using >, < or =.

	(A)	(B)	(C)
A	=	<	<
B	<	>	=
C	<	<	>
D	>	<	>

I think that this question is wrong

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Ans 1:

Rudra Naik from Avalon Heights International School, Navi Mumbai

Class : Class 5

This question r u serious rn Its C for cat LOL

Ans 2:

Krishnam Singhal from GEMS MODERN ACADEMY, DUBAI

Class : Class 3

bad question

Ans 3:

AREEN from BOLTON SCHOOL, Secunderabad

Class : Class 5

Ans is C because LIV=54 & XCIX=99 XLIV=44 & XLVI=46 CCV=205 & XCV=95 Therefore, LIVXCV

Ans 4:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

C C C THE ANSWER IS C

Ans 5:

AREEN from BOLTON SCHOOL, Secunderabad

Class : Class 5

Answer is C because: LIV=54 XCIX=99 54<99 XLIV=44 XLVI=46 44<46 CCV=205 XCV=95 205>95

Ans 6:

Avighna Shastri from doha modern indian school, doha

Class : Class 2

probably

Ans 7:

Kavish Korke from Narayana Group, Dombivli

Class : Class 5

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Tejas from GV, BANGALORE

Subject :IMO Class : Class 9

State 'T' for true and 'F' for false.
(i) A triangle whose sides measure 8 cm, 4 cm and 12 cm can be possible.
(ii) It is possible to construct an angle of 67.5° using ruler and compass only.
(iii) It is possible to construct a ∆XYZ in which ∠X = 60°, ∠ Y = 100° and ∠ Z = 20°.

(i) (ii) (iii)
A TFT
B FFF
C FTT
D TTF

This given answer seems to be wrong. Can someone kindly check?

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Ans 1:

Sairam from Swami Vivekanand High School, Mumbai

Class : Class 10

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Ans 2:

from d.g.v. sr. sec. school, rohtak

Class : Class 9

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Ans 3:

deepa shet from National public school , Shimoga

Class : Class 9

Yes it is correct

Ans 4:

Mihir Rupani from Allen Career Institute, Rajkot

Class : Class 9

Yes the correct answer is option C because first is false and rest are.

Ans 5:

Debojyoti Majumder from South Point School , Kolkata

Class : Class 5

Ans 6:

Nipun Abhilash from National Public School, Banashankhari, Bangalore

Class : Class 9

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Ans 7:

Akshaj Malpani from Indira national school, Pune

Class : Class 8

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Ans 8:

Tejas from GV, BANGALORE

Class : Class 10

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Ans 9:

Bhavya Lal Deo from ST JOSEPH CONVENT HIGH SCHOOL , BIHAR

Class : Class 9

Correct answer is C

Ans 10:

Arpit Gupta from Pkr Jain , Ambala

Class : Class 10

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Mystic Girl from NPS, Bnagalore

Subject :IMO Class : Class 5

Harsh works at a flower shop located on the 80th floor of a building. He went down 60 floors to deliver flowers, back up 15 floors and, finally down 2 floors to make a third delivery. Which floor was Harsh on when he made the third delivery?

A33^rd
B35^th
C37^th
D47^th

A is the correct answer.easy right?

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Ans 1:

Pranav M S from JSS Public school, Mysore

Class : Class 5

It is too easy 80-60+15-2=33

Ans 2:

Shruti Rajshree from NPS Indiranagar, Bengaluru

Class : Class 3

Yeah A is the answer

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Kaustubh Jha from Mount litera zee school, Patna

Subject :IMO Class : Class 5

What is 34×56-65(66÷11)+3

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Ans 1:

Pranav M S from JSS Public school, Mysore

Class : Class 5

1836

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Aryaveer Agrawal from DELHI PUBLIC SCHOOL, Ahmedabad

Subject :IMO Class : Class 8

Monthly salary of a person is ₹ 15000. The central angle of the sector representing his expenses on food and house rent on a pie chart is 60°. The amount he spends on food and house rent is

A ₹ 5000
B ₹ 2500
C ₹ 6000
D ₹ 9000

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Ans 1:

Abhigyan from ST MICHAEL SCHOOL, Durgapur

Class : Class 8

B. Is the correct answer

Ans 2:

Khyathi Komalan from Vaels international school, Chennai

Class : Class 9

The answer is (B) Using Unitary Method- Angle for 15,000 rupees= 360 degrees Angle for x rupees=60 degrees If money spent increases, degree of angle used increases, Therefore it is direct variation- x/1500=60/360 x=1/6 x 15,000 x= 2500 rupees

Ans 3:

ATULYA KUMAR from Jp international school, GAUTAM BUDHA NAGAR

Class : Class 9

B IS CORRECT

Ans 4:

sagar kumar from D A V public school , NOIDA

Class : Class 10

B

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Aryaveer Agrawal from DELHI PUBLIC SCHOOL, Ahmedabad

Subject :IMO Class : Class 8

Rohan and Shalu are playing with 5 cards as shown in the figure. What is the probability of Rohan picking a card without seeing, that has the number 2 on it?

A
B
B
D