International Maths Olympiad Forum By SOF Olympiad Trainer - Page 527

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
yeah....crrct

Ans 2: (Master Answer)

Class : Class 1

The correct answer is D

 


Ans 3:

Class : Class 8
yeah

Ans 4:

Class : Class 6
But the shaded portion is equal in both the cases

Ans 5:

Class : Class 9
The answer is d because 2/4 is smaller than 2/3.

Ans 6:

Class : Class 6

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8
The answer should be 16

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
the division sign represents both addition and subtraction and we can get to different answers

Ans 4:

Class : Class 10
Yes there is a problem in the question

Ans 5:

Class : Class 8
Why do things like this ALWAYS happen with sof?

Ans 6:

Class : Class 8
there is problem in the question.....pls correct it

Ans 7:

Class : Class 10

Ans 8:

Class : Class 8
Please correct the problem

Ans 9:

Class : Class 8
How can you change 2 to 3? and how can you mark division symbol as addition and subtraction? SOF DON'T DO SUCH MISTAKES OR WE'LL HAVE TO REPORT IT TO sofworld.org

Ans 10:

Class : Class 6
Ya there is a problem...............answer is 32 you seee

Ans 11:

Class : Class 6
yes pls correct the problem...

Ans 12:

Class : Class 6
There is problem in the Q as it mentions division sign represents both addition and substraction

Ans 13:

Class : Class 10
yes there is a problem in the question

Ans 14:

Class : Class 3
yes, and should be 32, which is not an option. Pl. correct this

Ans 15:

Class : Class 8
There is a problem in this question. Please correct this.

Ans 16:

Class : Class 8
WHY ARE YOU CONFUSING US AND WHY ARE YOU NOT PROVIDING CORRECT QUESTIONS AND WHY ARE YOU MAKING US LOSE OUR MARKS???????? SOF this is WRONG!!!!!!!!!!!!!!!!!

Ans 17:

Class : Class 7
ANSWER IS 16!!!

Ans 18:

Class : Class 8

Ans 19:

Class : Class 8
answer should be 16 as - coded for subtraction doesn't really code anything so it is 22-6=16

Ans 20:

Class : Class 7

Ans 21:

Class : Class 9

Ans 22:

Class : Class 7
Then the calculation will turn to 20 +8/4x3x2, =20+2x3x2, =20+6x2, =20+12 =32, so there is a problem in the question

Ans 23:

Class : Class 7
yes please correct. There are 2 division signs which represent addition n subtraction which leads to various answers

Ans 24:

Class : Class 4
yes there is an error in the question

Ans 25:

Class : Class 8
There is a damn problem with this question .....Is this what I paid for?!?

Ans 26:

Class : Class 5

Ans 27:

Class : Class 9
the answer can be 31 and 13

Ans 28:

Class : Class 8
The divisions sign is used in 2 places, but I think it means subtraction because '-' meaning subtraction is not exactly coding anything...And in that case 20 8/4-3x2=20 2-6=16...Which is not an options for whatever weird reason

Ans 29:

Class : Class 6
This question is not correct, as the division symbol is used for both addition and subtraction.

Ans 30:

Class : Class 4
its wrong!!!

Ans 31:

Class : Class 8
division sign is both addition and subtraction....whyyyyyyy

Ans 32:

Class : Class 8
actually! it is 32...........plz correct it

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Subject :IMO    Class : Class 10

Ans 1:

Class : Class 10
C

Ans 2: (Master Answer)

Class : Class 1

The correct answer is C.

In ΔAED
AE D + ∠EAD + 90° = 180° (Angle sum property) 
⇒ ∠AED + ∠EAD = 90° 
⇒ ∠EAD = 90° – ∠AED ...(i) 
Also, ∠EAD = (50° + ∠AFB) ...(ii) (Exterior angle property) 
From (i) and (ii), we have 
50° + ∠AFB = 90° – ∠AED 
⇒ ∠AFB + ∠AED = 90° – 50° = 40° 
⇒ ∠AED + ∠CFD = 40°


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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6

Ans 3:

Class : Class 5
D

Ans 4:

Class : Class 6
5

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 9

Ans 2: (Master Answer)

Class : Class 1

The correct answer is A.

In the 1st column, 2 X 1 + 1 = 3,

In the 2nd column, 12 X 9 + 9 = 117

Similarly, In the 3rd column, 7 X 14 + 7 = 105

Hence, the missing number is 7.


Ans 3:

Class : Class 8
ss

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
No idea

Ans 2:

Class : Class 7
No idea

Ans 3:

Class : Class 7
No idea

Ans 4:

Class : Class 7
either a or d

Ans 5:

Class : Class 6
C IS THE ANSWER

Ans 6:

Class : Class 6

Ans 7:

Class : Class 9
C is the ans

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
Check the numbers then find the 4 in the ten thousand place

Ans 2:

Class : Class 8
all sports

Ans 3:

Class : Class 4
the answer is a

Ans 4:

Class : Class 2
ya answer is A

Ans 5:

Class : Class 4
all sports

Ans 6:

Class : Class 6
A

Ans 7:

Class : Class 7
All sports

Ans 8:

Class : Class 8
very easy bro! the answer is a (all sports)

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
D

Ans 3:

Class : Class 9

Ans 4:

Class : Class 9
It is C

Ans 5:

Class : Class 9

Ans 6:

Class : Class 5

Ans 7:

Class : Class 9
I am bot

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Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Class : Class 1

The correct answer is A.

Fourth from the left end is  .

Third to the right of  is .


Ans 2:

Class : Class 7
The correct answer is A

Ans 3:

Class : Class 7

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Subject :IMO    Class : Class 5

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