International Maths Olympiad Forum By SOF Olympiad Trainer - Page 672

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 9
all answers are correct, this question is wrong

Ans 2:

Class : Class 9
Since the options seem incorrect, kindly report an error for this question. Hopefully this gets reviewed.

Ans 3:

Class : Class 9
everyone to kindly check my panswer post it will most probably help u resolve what is the answer and please if there is any incorrect answer in my provided answer, please tell that thing.

Ans 4:

Class : Class 9
all options can be correct but if we see logically, option (D) states that "if the diagonals of a quadrilateral are equal it must be a rectangle" whereas the diagonals of a kite can also be equal.

Ans 5:

Class : Class 8
D is answer

Ans 6:

Class : Class 8

Ans 7:

Class : Class 8
i agree, A is correct, there is no incorrect answer, as a rectangle is a special trapezium

Ans 8:

Class : Class 9
wrong answer.it should be d

Ans 9:

Class : Class 9

Ans 10:

Class : Class 9

Ans 11:

Class : Class 9
A is correct. By definition, a trapezium has ONLY ONE pair of parallel sides. A rectangle has 2 pairs of parallel sides, hence it is not a trapezium.

Ans 12:

Class : Class 8
This question is unclear if synopsis does not define it

Ans 13:

Class : Class 10
The answer is D as Rectangle is also a special type of trapezium so it is correct . Also, the option B is correct. Option C is correct too as interior angle sum of triangle is 180 and the exterior angle sum is double i.e. 360The correct answer would be option D as isosceles trapezium also has its diagonals equal therefore it is the incorrect statement required. Therefore, the answer should be D instead of C

Ans 14:

Class : Class 8
A rectangle is a type of trapezium only and anyway the diagonals of a square is also equal

Ans 15:

Class : Class 8
all options are correct(A) a rectangle follows all the characteristics of a trapizium. It has one pair of parllel sides. it has four sides and sum of all the angles is 360(b) it can be drawn like one angle is 90 and four sides are 40,40,50,50 than it is a rectangle which is quadrilateral(c)It is a law that sum of ext. angles in every polygon is 360 and sum of int. angles in a triangle is 180 which is half of 360(d) all the quadrilaterals that have equal diagonals follow all the rules of a rectangle like square which has two set of equal and parllel sides and its diagonals are equal. A square also has all right angles.

Ans 16:

Class : Class 10
Wrong question guys !

Ans 17:

Class : Class 10
rectangle is also a trapezium because atleast one pair of sides parallel……..

Ans 18:

Class : Class 7

Ans 19:

Class : Class 7
Answer should be D diagonals are equal in square as well So if diagonals are equal it need not be a rectangle

Ans 20:

Class : Class 8

Ans 21:

Class : Class 9
Wrong Question guys both a and d look incorrect as rectangle is not a trapezium and even square's diagonals are equal.

Ans 22:

Class : Class 9
Trapezium is a quadrilateral with two parallel sides. Parallelogram is a special case of trapezium and rectangle is a special case of parallelogram, hence rectangle is a special case of trapezium

Ans 23:

Class : Class 8
all options are true, i think option(c) should be "Triangle is a polygon whose exterior angle is double its interior angle". This way option(c) will be INCORRECT

Ans 24:

Class : Class 9

Ans 25:

Class : Class 10
The answer is D

Ans 26:

Class : Class 10
Both a and d options are correct, its marker wrong. Rectangle is a special trapezium and square also has all sides equal

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
If you all agree the answer is C You all will get from me a tasty little sherbet candy

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
Can you please explain how the answer is "c" .

Ans 4:

Class : Class 7

Ans 5:

Class : Class 6
Give me the sherbet candy I will give you a kindness badge I am in England

Ans 6: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 7:

Class : Class 4

Ans 8:

Class : Class 4

Ans 9:

Class : Class 4
Anshuman malhotra from mumbai , i got it correct

Ans 10:

Class : Class 4
The correct answer is c

Ans 11:

Class : Class 7
How the answer is C

Ans 12:

Class : Class 7
I Did not at all understand!!!!!!!

Ans 13:

Class : Class 2
Yap, the right answer is C

Ans 14:

Class : Class 4
Master Question

Ans 15:

Class : Class 1

Ans 16:

Class : Class 6
yes i agree the anwer is c

Ans 17:

Class : Class 9
I agree that the answer is C …………….. Now give me the "Sherbet Candy" Ashmi. Ha Ha Ha !!!

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 10
because its asking the unshaded figure not the shaded figure

Ans 2:

Class : Class 2
because it is unshaded not shaded.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9

Ans 2:

Class : Class 8
Bbbbbbbbbbb

Ans 3:

Class : Class 9
b is the correct answer

Ans 4:

Class : Class 5
B is the correct answer and not D

Ans 5:

Class : Class 5
master admin answer

Ans 6:

Class : Class 5
I THINK B IS THE ANSWER

Ans 7:

Class : Class 4
It's b guys it's b not d

Ans 8:

Class : Class 5
b is not the answer but d because in a symetry , both the sides should be opposite .

Ans 9:

Class : Class 5
why are you writing same sentence

Ans 10:

Class : Class 9
Even I think the answer is B

Ans 11:

Class : Class 5

Ans 12:

Class : Class 6
I thought A was the answer but the answer is d

Ans 13:

Class : Class 8
The answer is D only

Ans 14:

Class : Class 8
Plus there is no solution

Ans 15:

Class : Class 5
B is only the answer because it is symetry

Ans 16:

Class : Class 7

Ans 17:

Class : Class 5
why are you silent you dont`t have head see properly then answer me

Ans 18:

Class : Class 5
Guys, it's d.. due to some explanations, I clicked b.... also, the people saying b are wrong as d showed up in my test results

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
According to me the correct answer to this question is D] Because it has a line of symmetry from top to bottom

Ans 2:

Class : Class 5
But B answer is also the correct answer

Ans 3:

Class : Class 8
answer is not b because the lines on top of the letter are horizontal

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
I say B is also a line of symmetry but the correct answer is D

Ans 6:

Class : Class 5
But B has slanting line of symmetry.The line of symmetry doesn't means only to be strategy

Ans 7:

Class : Class 5
D is the answer because it is straight but option B is not correct because over here it is slanting , and there is no such symmetry

Ans 8:

Class : Class 5
sorry

Ans 9:

Class : Class 5
the answer to this question can also be b because option b also has a line of symmetry

Ans 10:

Class : Class 5

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
option a is correct as angle pqs is epual to angle qsa +angle ast (alternate interior angle)=70 98=28+x x=98-28 x=70 ast+tsb=180(straight angle) 70+y=180 y=180-70 y=110

Ans 2:

Class : Class 7
i agree

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 9
It's simple addition and subtraction. The total cost of both toys is 52.45+25.32=77.77 You gave him a hundred rupee note. So you gave him 22.23 rupees morethe actual prize which you would recieve as change. So the answer is 22.23 (100-77.77=22.23)

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
The answer is C] GH Because if we count the blocks in AB then, it's4 If we count the blocks in GH then, it's4 THIS S MY FORMULAE

Ans 2:

Class : Class 8

Ans 3:

Class : Class 6
AND VERY SILLY MISTAKE TOO

Ans 4:

Class : Class 6
How is the answer B?

Ans 5:

Class : Class 6
ans is c

Ans 6:

Class : Class 5
right

Ans 7:

Class : Class 8

Ans 8:

Class : Class 6
OMG, the question itself is wrong

Ans 9:

Class : Class 7
it should be C

Ans 10:

Class : Class 5
question itself is wrong

Ans 11:

Class : Class 8
b is totally correct just see the blocks carefully

Ans 12:

Class : Class 5
ans 7 is right. perpendicular = 90 degree intersecting straight lines

Ans 13:

Class : Class 9
All transversal lines look perpendicular

Ans 14:

Class : Class 7
do not worry sof will make the same mistake on paper

Ans 15:

Class : Class 7
This question is itself wrong..

Ans 16:

Class : Class 9

Ans 17:

Class : Class 8
B is the correct answer guys, look at the blocks carefully.

Ans 18:

Class : Class 5
the answer should be C

Ans 19:

Class : Class 6

Ans 20:

Class : Class 5
the answer is d as the line needs to be a proper slant and only i-j is properly slanted

Ans 21:

Class : Class 5

Ans 22:

Class : Class 7
Master answer required

Ans 23:

Class : Class 7

Ans 24:

Class : Class 6
It is B because the point where EF and AB met it is the centre point of 4 squares making it correct. Guys it is easy but we must know the trick (btw some questions are wrong itself )

Ans 25:

Class : Class 8
Answer is C

Ans 26:

Class : Class 8
It's cofusing

Ans 27:

Class : Class 6
ANS 33 is correct

Ans 28:

Class : Class 6
WHOEVER HAS STUDIED IN GURRUZI 2024 WOULD KNOW THIS ANSWER BUT THE QUESTION ITSELF IS WRONG IT SHOULD BE WHICH ONE OF FOLLOWING IS (NOT) perpendicular to Ab

Ans 29:

Class : Class 9

Ans 30:

Class : Class 8
Ans is C..... Olympiad Trainer please give master answer or solution.

Ans 31:

Class : Class 6
It is B since GH is not perpendicular by the smallest of angles. EF is perpendicular since if you look at the triangles or 5-sided shapes that are made when lines AB and EF come through a square with an angle not equal to 45 degrees, the sizes are the same. This shows that AB and EF are a pair of perpendicular lines.

Ans 32:

Class : Class 4
Wrong options SOF.!!!!!! Do you want us to fail

Ans 33:

Class : Class 9
The answer should be C

Ans 34:

Class : Class 6
we need Sof to clear some of our issues here so SOF pls respond soon

Ans 35:

Class : Class 6

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