International Maths Olympiad Forum By SOF Olympiad Trainer - Page 685

User Forum

Subject :IMO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 10
Wrong question guys !

Ans 4:

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

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

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 9:

Class : Class 9

Ans 10:

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 11:

Class : Class 8
D is answer

Ans 12:

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 13:

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 14:

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

Ans 15:

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 16:

Class : Class 7

Ans 17:

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 18:

Class : Class 9
wrong answer.it should be d

Ans 19:

Class : Class 8

Ans 20:

Class : Class 9

Ans 21:

Class : Class 9

Ans 22:

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

Ans 23:

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 24:

Class : Class 8

Ans 25:

Class : Class 10
The answer is D

Ans 26:

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.

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

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

Ans 2:

Class : Class 1

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4

Ans 5:

Class : Class 5
Master Question

Ans 6:

Class : Class 4

Ans 7:

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

Ans 8:

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

Ans 9:

Class : Class 8

Ans 10:

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

Ans 11:

Class : Class 7
How the answer is C

Ans 12:

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

Ans 13:

Class : Class 6
yes i agree the anwer is c

Ans 14:

Class : Class 2
Yap, the right answer is C

Ans 15:

Class : Class 4
The correct answer is c

Ans 16: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 17:

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

Post Your Answer

Subject :IMO    Class : Class 3

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 2
because it is unshaded not shaded.

Ans 2:

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

Post Your Answer

Subject :IMO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 5
master admin answer

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
Plus there is no solution

Ans 5:

Class : Class 5

Ans 6:

Class : Class 9
Even I think the answer is B

Ans 7:

Class : Class 5
I THINK B IS THE ANSWER

Ans 8:

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

Ans 9:

Class : Class 5
why are you writing same sentence

Ans 10:

Class : Class 9
b is the correct answer

Ans 11:

Class : Class 8
Bbbbbbbbbbb

Ans 12:

Class : Class 8
The answer is D only

Ans 13:

Class : Class 9

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Post Your Answer

Subject :IMO    Class : Class 5

Ans 1:

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 2:

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

Ans 3:

Class : Class 5
sorry

Ans 4:

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

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5

Ans 7:

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

Ans 8:

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 9:

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

Ans 10:

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

Post Your Answer

Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
i agree

Ans 2:

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

Post Your Answer

Subject :IMO    Class : Class 8

Post Your Answer

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)

Post Your Answer

Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
Master answer required

Ans 3:

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

Ans 4:

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

Ans 5:

Class : Class 6
How is the answer B?

Ans 6:

Class : Class 7

Ans 7:

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

Ans 8:

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 9:

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

Ans 10:

Class : Class 8
It's cofusing

Ans 11:

Class : Class 6

Ans 12:

Class : Class 6
OMG, the question itself is wrong

Ans 13:

Class : Class 8

Ans 14:

Class : Class 5

Ans 15:

Class : Class 5
the answer should be C

Ans 16:

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 17:

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 18:

Class : Class 7
it should be C

Ans 19:

Class : Class 6
ans is c

Ans 20:

Class : Class 7
question itself is wrong

Ans 21:

Class : Class 7
This question is itself wrong..

Ans 22:

Class : Class 9

Ans 23:

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

Ans 24:

Class : Class 9
All transversal lines look perpendicular

Ans 25:

Class : Class 9
The answer should be C

Ans 26:

Class : Class 8
Answer is C

Ans 27:

Class : Class 5
right

Ans 28:

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

Ans 29:

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

Ans 30:

Class : Class 6
ANS 33 is correct

Ans 31:

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

Ans 32:

Class : Class 6
AND VERY SILLY MISTAKE TOO

Ans 33:

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 34:

Class : Class 9

Ans 35:

Class : Class 6

Post Your Answer