International Maths Olympiad Forum By SOF Olympiad Trainer

Kedar Kulkarni from Walnut School, Pune

Subject :IMO Class : Class 3

Mary and her friends put their marbles into groups of ten. Mary had 6 groups, Sandy had 5 groups and Jack had 9 groups. There were 4 marbles left over. How many marbles did the three friends have altogether ?

A120
B822
C204
D214

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(C): Number of marbles in each group = 10
Total number of groups altogether had = 6 + 5 + 9 = 20
Total number of marbles = 20 x 10 + 4 = 204

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Amar Ghatak from Maha Rishi Vidyamandir , Kolkata

Subject :IMO Class : Class 5

Annie is making 13 bows to sell at the annual craft fair. She has 36 feet of ribbon to make her bows. If each bow requires feet of ribbon, how much ribbon will not be used?

A
B
C
D16 feet

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Ans 1:

Amar Ghatak from Maha Rishi Vidyamandir , Kolkata

Class : Class 7

Ans 2:

Tanishq Lotake from Bishop school, Pune

Class : Class 5

36-(117/4)= 27/4 Ans: (B) 6 3/4

Ans 3:

Arkajyoti Das from techno, Cooch Behar

Class : Class 9

Ans 4:

swastik Biswal from St Joseph Convent Higher Secendary school, Sambalpur

Class : Class 5

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Kamal Uddin from New Era Public School, NEW DELHI

Subject :IMO Class : Class 6

What is the least number of squares that must be added so that the line MN becomes a line of symmetry?

A5
B6
C4
D8

Sit can also be 4

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(B)

The least number of squares that must be added in the fiigure so that the line MN becomes a line of symmetry = 6

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Debanshi Kumar from Whitefield Global School, Bangalore

Subject :IMO Class : Class 6

A black squirrel takes minutes to climb a tree. A brown squirrel takes minutes to do the same. Which squirrel climbs the tree faster and by how much?

ABlack squirrel, mins
BBlack squirrel, mins
CBrown squirrel, mins
DBrown squirrel, mins

There is an error in the solution. If we compare 55/20 (distance covered by the black squirrel) and 28/20 (distance covered by the brown squirrel), then obviously 55/20 is greater. (the distance covered by the black squirrel). But in the solution, it is said that the brown squirrel has traveled more distance. Which is actually wrong. I request SOF Olympiad Trainer to correct it.

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Ans 1:

Iba khan from DPS GBN, Noida

Class : Class 6

Ans 2:

Debanshi Kumar from Whitefield Global School, Bangalore

Class : Class 6

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Dipan Mandal from MDPS, Faridabad

Subject :IMO Class : Class 1

5 girls share 15 stamps equally. 3 girls get ______ stamps altogether.

(a) 8
(b) 9
(c) 5
(d) 20

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(B): Each girl will get 3 stamps .

Therefore, 3 girls will get 3+3+3=9 stamps.

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mystic bro7pro from arbor school, Hyderabad

Subject :IMO Class : Class 6

Which of the following Venn diagrams best represents the relationship amongst, "Door, Window, House"?

A
B
C
D

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Option (A) is correct.

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Sarangan Srinivasan from Kennedy high the global school, HYDERABAD

Subject :IMO Class : Class 8

If then find the value of

A76
B65
C63
D47

can u explain this

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Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon

Class : Class 7

B

Ans 2:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai

Class : Class 9

HOW?

Ans 3:

Hprakash09 from Billabong high Bhopal, Bhopal

Class : Class 7

Solution please

Ans 4:

Sarthak Gupta from Delhi Public School Sector 12 R K PURAM, NewDelhi

Class : Class 10

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