International Maths Olympiad Forum By SOF Olympiad Trainer - Page 635

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Subject :IMO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 6
The answer is (D)

Ans 3:

Class : Class 8
118 sq.cm

Ans 4:

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 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 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 7:

Class : Class 5

Ans 8:

Class : Class 7
128 sq cm

Ans 9:

Class : Class 10
The answer is A

Ans 10:

Class : Class 8
118 sq.cm

Ans 11:

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 12:

Class : Class 8
None of these

Ans 13:

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 14:

Class : Class 9
I agree with answer 14

Ans 15:

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

Ans 16:

Class : Class 6

Ans 17:

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 18:

Class : Class 5
c

Ans 19:

Class : Class 8

Ans 20:

Class : Class 8
Option A

Ans 21:

Class : Class 9
All knots or each knot?

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 7
The correct answer is B.

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7
SolutionArea of larger rectangle = (22 × 8) sq. cm= 176 sq. cmArea of unshaded rectangle = (7 × 6) sq. cm= 42 sq. cmArea of square = (4 × 4) sq. cm = 16 sq. cm∴ Area of shaded region= 176 sq. cm – (42 16) sq. cm= 118 sq. cm

Ans 5:

Class : Class 8
answer is b

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
26

Ans 2:

Class : Class 5
A-26

Ans 3:

Class : Class 5

Ans 4:

Class : Class 4
easy

Ans 5:

Class : Class 6
IT'S A BIT HARD

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8
the answer should be B because if we multiply we will get the same answer this is my comment

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
bbbbbbbbb

Ans 4: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7

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Subject :IMO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
Explain it..... Plz..... Help me out of it

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Subject :IMO    Class : Class 1

Ans 1:

Class : Class 2
D

Ans 2:

Class : Class 5
The answer is D

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
The answer is A as the question says that Yashika has 8 red marbles in her bag.

Ans 2:

Class : Class 5
Areen copied the answer from Google.

Ans 3:

Class : Class 5
The answer is A as the question says that Yashika has 8 red marbles in her bag.

Ans 4:

Class : Class 8
8/26

Ans 5:

Class : Class 9
Areen is correct

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Subject :IMO    Class : Class 1

Ans 1:

Class : Class 10
triangle

Ans 2:

Class : Class 1
C

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