International Maths Olympiad Forum By SOF Olympiad Trainer - Page 677

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
P=l+b×2 L=5w B=w =5w+w×2 =6w×2 =12w cm

Ans 2:

Class :
Breadth=w, Length is 5 times more, Therefore, length = 5w Therefore, perimeter=2(5w+w) =2*6w =12w Hence, b is the correct answer

Ans 3:

Class :
Answer is B

Ans 4:

Class :
answer is 12W cm as the formula is 2*(length+breadth)=perimeter ,so w ( breadth) +5w (length) =6w (length+breadth) and then 6w *2 =12w(answer)

Ans 5:

Class : Class 9
6w

Ans 6:

Class : Class 9

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Subject :IMO    Class : Class 6

Ans 1:

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

Ans 2:

Class : Class 6
yeah....crrct

Ans 3:

Class : Class 6

Ans 4:

Class : Class 7
But the shaded portion is equal in both the cases

Ans 5: (Master Answer)

Class :

The correct answer is D

 


Ans 6:

Class : Class 8
yeah

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8
Please correct the problem

Ans 2:

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

Ans 3:

Class : Class 10

Ans 4:

Class : Class 10
the answer can be 31 and 13

Ans 5:

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

Ans 6:

Class : Class 4
its wrong!!!

Ans 7:

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

Ans 8:

Class : Class 9
The answer should be 16

Ans 9:

Class : Class 6

Ans 10:

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 11:

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

Ans 12:

Class : Class 8

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

Class : Class 4

Ans 18:

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

Ans 19:

Class : Class 5
yes, and should be 32, which is not an option. Pl. correct this

Ans 20:

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

Ans 21:

Class :
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 22:

Class : Class 9
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 23:

Class : Class 10
division sign is both addition and subtraction....whyyyyyyy

Ans 24:

Class : Class 9
This question is not correct, as the division symbol is used for both addition and subtraction.

Ans 25:

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

Ans 26:

Class : Class 7
ANSWER IS 16!!!

Ans 27:

Class : Class 9
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 28:

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

Ans 29:

Class : Class 5

Ans 30:

Class : Class 10

Ans 31:

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

Ans 32:

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

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Subject :IMO    Class : Class 10

Ans 1:

Class :
C

Ans 2: (Master Answer)

Class :

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 :
D

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6
5

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Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Class :

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 2:

Class : Class 9

Ans 3:

Class : Class 9
class:

Ans 4:

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
C is the answer...

Ans 3:

Class : Class 6
C is the Answer

Ans 4:

Class : Class 9
C is the ans

Ans 5:

Class : Class 6
C IS THE ANSWER

Ans 6:

Class : Class 6
Question is irrelevant?

Ans 7:

Class :
either a or d

Ans 8:

Class : Class 7
Wrong

Ans 9:

Class : Class 6

Ans 10:

Class : Class 7
No idea

Ans 11:

Class : Class 7
no idea

Ans 12:

Class : Class 7
No idea

Ans 13:

Class : Class 6
no idea bruh

Ans 14:

Class : Class 7
The first and third letters are interchanged, and their immediate next letter is taken. The 2nd, 4th and 6th letter are directly written without any change. Same happens to 5th and 7th letters. This is the pattern here.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
A

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 5
its C

Ans 5:

Class :
the answer is a

Ans 6:

Class :
all sports

Ans 7:

Class : Class 9
all sports

Ans 8:

Class : Class 9
All sports

Ans 9:

Class : Class 2
ya answer is A

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9
It is C

Ans 2:

Class :
D

Ans 3:

Class : Class 9
I am bot

Ans 4:

Class : Class 9

Ans 5:

Class : Class 9

Ans 6:

Class : Class 4

Ans 7:

Class : Class 5

Post Your Answer

Subject :IMO    Class : Class 2

Ans 1:

Class : Class 7
The correct answer is A

Ans 2:

Class : Class 7

Ans 3: (Master Answer)

Class :

The correct answer is A.

Fourth from the left end is  .

Third to the right of  is .


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