International Maths Olympiad Forum By SOF Olympiad Trainer - Page 639

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Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The perimeter of the square can be calculated as 6x4=24 cm. Now, the perimeter of the rectangle is same as that of the square so by applying the formula:- 2(L+B)=24 2(8+B)=24 B=4cm.

Ans 2:

Class : Class 3

Ans 3:

Class : Class 5
Why Admin used to tell like "The correct option is B, C, D etc" And now he's telling explanations?

Ans 4:

Class : Class 9
The answer is A part as there are two breadths in a rectangle

Ans 5:

Class : Class 4
Shreeraj from ISWKi Oman Class : 4 Option C

Ans 6:

Class : Class 2
Shouldn't the answer be [B] ?

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 1
I think answer is B

Ans 2:

Class : Class 4
But I think mohammed is mad

Ans 3:

Class : Class 1

Ans 4:

Class : Class 9
Option B is the correct answer as the square has all sides equal, Rectangle has only 2 sides equal, and pentagon has 5 sides

Ans 5:

Class : Class 8

Ans 6:

Class : Class 8

Ans 7:

Class : Class 5

Ans 8:

Class : Class 5
d

Ans 9:

Class : Class 4
yeah i know. is there 4 in the options?

Ans 10:

Class : Class 7
Ans 2

Ans 11:

Class : Class 5
I think the answer is 4

Ans 12:

Class : Class 6
the question says that none of the sides are equal so few quadrilatral 's sides are unequal as the answer i choosed is b which is realated to the text given above

Ans 13:

Class : Class 5

Ans 14:

Class : Class 4
Fun Fact: DO YOU KNOW THAT SQUARES HAVE 4 EQUAL SIDES AND ANGLES TOO?

Ans 15:

Class : Class 4

Ans 16:

Class : Class 4
Option B

Ans 17:

Class : Class 5
B

Ans 18:

Class : Class 5

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 7
A

Ans 2:

Class : Class 2
Daksh Garg from Bombay Scottish School Mahim Mumbai

Ans 3:

Class : Class 5

Ans 4:

Class : Class 7

Ans 5:

Class : Class 5
A

Ans 6:

Class : Class 3

Ans 7:

Class : Class 3

Ans 8:

Class : Class 8

Ans 9:

Class : Class 4
A

Ans 10:

Class : Class 3
A

Ans 11:

Class : Class 5
aa=ans

Ans 12:

Class : Class 3
A

Ans 13:

Class : Class 7

Ans 14:

Class : Class 3

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8
D)

Ans 2:

Class : Class 5
An angle has 3 letters .Answer should be both c and d

Ans 3:

Class : Class 5
ANS- D

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 7
D

Ans 2:

Class : Class 9
Your answer is wrong. If the angle is 45, the direction will be south-west.for north-west, angle should be 135.

Ans 3:

Class : Class 9
Your answer is wrong. If the angle is 45, the direction will be south-west.for north-west, angle should be 135.

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 3
A

Ans 3:

Class : Class 4
A

Ans 4:

Class : Class 3

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1
It has been assumed to be 72 Kg. It is a hypothetical situation.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9
In the figure 'cm' is written, the solution has 'm' in it. SOF please correct it to avoid confusion.

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 9
everything is written in centimetre not in metre.

Ans 4:

Class : Class 8
answer is c

Ans 5:

Class : Class 6
The answer is C.

Ans 6:

Class : Class 9
Question has been formed wrongly in terms of unit of measurement as all areas should either be in cm or in m.

Ans 7:

Class : Class 5
all should be in cm or m question is wrong or else the answer is (d),(C),(a),(b)

Ans 8:

Class : Class 5

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8
Answer is D, because 2m for EACH knot, so multiplying by 4 gives 8. Then adding to 120 gives answer 128. As this answer is not in options A, B and C, answer is D, none of these

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8
118 sq.cm

Ans 4:

Class : Class 7
128 sq cm

Ans 5:

Class : Class 5
option d according to SOF but it should be option c as it has said for the knots. The word ''knots'' is in plural form which means there are many knots which means it will be a l the knots counted

Ans 6:

Class : Class 9
Answer should be Option C, not D, because 2 meter for knots is mentioned. It is not mentioned that 2 m is required for each knot.

Ans 7:

Class : Class 8
Option A

Ans 8:

Class : Class 6
Ans is 122 (4×30=120 2=122

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5
Answer is C: 122. It says 2m is required for tying the "knots" which means 2m is the total length consumed the all knots. Had it said that 2m is required for each knot then the answer would be 128m.

Ans 11:

Class : Class 10
I agree with answer 14

Ans 12:

Class : Class 8
118 sq.cm

Ans 13:

Class : Class 5
c

Ans 14:

Class : Class 10
The answer is A

Ans 15:

Class : Class 9
All knots or each knot?

Ans 16:

Class : Class 6
The answer is (D)

Ans 17:

Class : Class 5
In the question it is written 2m for knots, which means 122m of rope is required. If it would be given 2m for each knot then the answer is 128m.

Ans 18:

Class : Class 7
C is the answer to this question but it is showing that D is the answer. Master answer required

Ans 19:

Class : Class 5
Answer: 128Explanation:Perimeter = 30 x 4 = 120Space for knots = 2 x 4 = 8 (each knot = 2m)Total (answer) = 30 x 4 2 x 4 = 128 m 128 > 120, 118 or 122 so option D. None of these is the correct option

Ans 20:

Class : Class 8
None of these

Ans 21:

Class : Class 8

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