International Maths Olympiad Forum By SOF Olympiad Trainer - Page 308

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Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1

(A): Let’s count the total number of pencils shown in the given picture. There are 22  pencils.
Now, let’s see which abacus is showing 22.
So, Option A is the right answer.


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Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

(C): Weight of 2 cylinders and 1 cone = 500g

Weight of 4 cylinders and 3 cones = 1300g

⇒ Weight of ( 2 cylinders and 1 cone  + 2 cylinders and 1 cone  + 1 cone )  = 1300g
⇒ 500g + 500g + Weight of 1 cone  = 1300g

⇒  Weight of 1 cone  = 1300 g - 1000 g = 300 g

Also, 

Weight of 2 cylinders and 1 cone = 500g

⇒ 300 g + Weight of 2 cylinders  = 500 g

⇒ Weight of 2 cylinders = 500g - 300 g = 200 g

⇒ Weight of 1 cylinder = 200 / 2 = 100 g 
 


Ans 2:

Class : Class 4
Answer is C

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
c

Ans 2:

Class : Class 8
answer is c because 15000-12000=3000

Ans 3:

Class : Class 7
where 120000 came from

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
I think the admin lost his mind

Ans 2: (Master Answer)

Class : Class 1

(D): Total fraction of wall painted by Ritu and Rashmi 


Ans 3:

Class : Class 6
ANSWER IS D

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
answer is B

Ans 2: (Master Answer)

Class : Class 1

(B): 


Ans 3:

Class : Class 5
b

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
SO THAT IT IT IS A ERROR

Ans 2:

Class : Class 2
kindly send its explaination

Ans 3:

Class : Class 4
X can be subtracted from L and that makes it 40. Please review

Ans 4:

Class : Class 4
It says that X CANNOT be subtracted from L which is wrong as X - L is meaningful and forms XL (40). So (c) is the answer.

Ans 5:

Class : Class 6

Ans 6:

Class : Class 5
l think a,b,c are wrong so d is the correct answer

Ans 7:

Class : Class 5

Ans 8:

Class : Class 4
m

Ans 9: (Master Answer)

Class : Class 1

(C): Symbol X can be subtracted from L and C only.


Ans 10:

Class : Class 4
Question is wrong A,B,C is correct

Ans 11:

Class : Class 7

Ans 12:

Class : Class 6

Ans 13:

Class : Class 4
I think that c is right ans because X can be subtracted by L and C only

Ans 14:

Class : Class 5
that is true I clicked something wrong

Ans 15:

Class : Class 5
I can’t understand

Ans 16:

Class : Class 4
ARE YOU MAD STUDENT?! XL(40) IS MEANINGFUL DINGUS!

Ans 17:

Class : Class 2
yaa

Ans 18:

Class : Class 4
please explain it

Ans 19:

Class : Class 5
very difficult

Ans 20:

Class : Class 4
(C): Symbol X can be subtracted from L and C only.

Ans 21:

Class : Class 4
ham o rubela theke sabdhane thakun khub baje rog

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5
it is d

Ans 3:

Class : Class 5
i did D but they marked it C

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 9
It is 9

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
You have wrong you have.told that (using one digit at least once)but you have used 5 double time

Ans 2:

Class : Class 7
you should use the number atleast once. so the greatest no u can make from the numbers provided is 5530. then multiply it with 15. you get the answer.

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Subject :IMO    Class : Class 8

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