International Maths Olympiad Forum By SOF Olympiad Trainer - Page 646

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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 5
why are you writing same sentence

Ans 2:

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 3:

Class : Class 5
master admin answer

Ans 4:

Class : Class 9
b is the correct answer

Ans 5:

Class : Class 9
Even I think the answer is B

Ans 6:

Class : Class 5
I THINK B IS THE ANSWER

Ans 7:

Class : Class 8
Plus there is no solution

Ans 8:

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

Ans 9:

Class : Class 5

Ans 10:

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

Ans 11:

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

Ans 12:

Class : Class 8
Bbbbbbbbbbb

Ans 13:

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

Ans 14:

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

Ans 15:

Class : Class 7

Ans 16:

Class : Class 5

Ans 17:

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

Ans 18:

Class : Class 8
The answer is D only

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

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

Ans 3:

Class : Class 5
sorry

Ans 4:

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 5:

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 6:

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

Ans 7:

Class : Class 5

Ans 8:

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

Ans 9:

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

Ans 10:

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

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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 5
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 2:

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 3:

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

Ans 4:

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

Ans 5:

Class : Class 8
It's cofusing

Ans 6:

Class : Class 8

Ans 7:

Class : Class 7
it should be C

Ans 8:

Class : Class 6
ANS 33 is correct

Ans 9:

Class : Class 6
How is the answer B?

Ans 10:

Class : Class 5
the answer should be C

Ans 11:

Class : Class 5
question itself is wrong

Ans 12:

Class : Class 6

Ans 13:

Class : Class 6
ans is c

Ans 14:

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 15:

Class : Class 5

Ans 16:

Class : Class 6
OMG, the question itself is wrong

Ans 17:

Class : Class 8
All transversal lines look perpendicular

Ans 18:

Class : Class 9
The answer should be C

Ans 19:

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

Ans 20:

Class : Class 7
This question is itself wrong..

Ans 21:

Class : Class 8
Answer is C

Ans 22:

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

Ans 23:

Class : Class 6
AND VERY SILLY MISTAKE TOO

Ans 24:

Class : Class 9

Ans 25:

Class : Class 6

Ans 26:

Class : Class 8

Ans 27:

Class : Class 8

Ans 28:

Class : Class 7
Master answer required

Ans 29:

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 30:

Class : Class 5
right

Ans 31:

Class : Class 5
we need Sof to clear some of our issues here so SOF pls respond soon

Ans 32:

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

Ans 33:

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

Ans 34:

Class : Class 7

Ans 35:

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

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
d

Ans 2:

Class : Class 4
d

Ans 3:

Class : Class 10
no , its b.

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6
It is c

Ans 3:

Class : Class 5

Ans 4:

Class : Class 9
It should be C as it is written that we have to find the perpendicular line for each figure, so there are three figures with perpendicular line but if we consider how many perpendicular lines are there in this picture then it should be 4. This answer is absolutely wrong.

Ans 5:

Class : Class 5
Angles consideration is confusing ....sometime inner and sometime outer angle is consider ....actually SINGLE LINE FIGURE SHOULD BE GIVEN

Ans 6:

Class : Class 4

Ans 7:

Class : Class 5
A perpendicular line is 90 degrees, last one doesn't count as 90 degrees, so C

Ans 8:

Class : Class 7
CONFUSING QUESTION

Ans 9:

Class : Class 8

Ans 10:

Class : Class 6

Ans 11:

Class : Class 6
yes

Ans 12:

Class : Class 5
How

Ans 13:

Class : Class 5
it should be a. thats what my supery dupery expert dad said

Ans 14:

Class : Class 6
how

Ans 15:

Class : Class 9
All figures have perpendicular lines

Ans 16:

Class : Class 5
'c' = correct

Ans 17:

Class : Class 9
But what about the curved arrow

Ans 18:

Class : Class 5
The answer should be C because in the first figure there are prependicular lines in the bottom in figure 2 there are prependicular lines all four sides near the arrows and in figure 3 there are prependicular lines at the bottom while there are no prependicular lines in figure 4 as they are all acute and obtuse angles so, the answer should be C not D.

Ans 19:

Class : Class 3
C

Ans 20:

Class : Class 8

Ans 21:

Class : Class 5

Ans 22:

Class : Class 9
D cannot be the answer at all.

Ans 23:

Class : Class 6

Ans 24:

Class : Class 8
i also got it wrong

Ans 25:

Class : Class 7
Something is wrong here. We have to confirm about it.

Ans 26:

Class : Class 8

Ans 27:

Class : Class 6
it is d

Ans 28:

Class : Class 8
All 4 figure has perpendicular line along perimeter

Ans 29:

Class : Class 8

Ans 30:

Class : Class 7
D is the answer to this question because all the lines are perpendicular and in the 3rd one the bottom lines are perpendicular

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
none of the options are correct

Ans 2:

Class : Class 9
None of the given options is correct .

Ans 3:

Class : Class 7
I tried it a 1000 times with calculator it is giving 0.0000515686

Ans 4:

Class : Class 9
it should be 0.166674175

Ans 5:

Class : Class 7

Ans 6:

Class : Class 5
Answer given is correct:0.0001289 - (0.0000000274 x 1293) 0.0000419032=(0.0001289 - 0.0000354282) 0.0000419032=0.0000934718 0.0000419032=0.00011353750

Ans 7:

Class : Class 9

Ans 8:

Class : Class 8
None of these are correct I have done in calculator

Ans 9:

Class : Class 9
Ya Parth Kaushish you are right. Got it Vihaan :) Thanks

Ans 10:

Class : Class 8
none of the options is correct

Ans 11:

Class : Class 7
none of the options are correct and the solution makes no sense the correct answer is 0.0000515686sof is glitched

Ans 12:

Class : Class 6
It should be 0.1666731750

Ans 13:

Class : Class 6

Ans 14:

Class : Class 9
correct answer is 0.0000515686. So, none of the provided options are correct.

Ans 15:

Class : Class 6
the correct answer is going to be 0.0000515686 . I have tried it 10 times. Its given wrong pls correct it SOF

Ans 16:

Class : Class 7
according to bodmas d option is correct

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