International Maths Olympiad Forum By SOF Olympiad Trainer - Page 584

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Subject :IMO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 5

Ans 3:

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 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
sorry

Ans 6:

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

Ans 7:

Class : Class 5

Ans 8:

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

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

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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

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

Ans 2:

Class : Class 8

Ans 3:

Class : Class 5
right

Ans 4:

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 5:

Class : Class 5
OMG, the question itself is wrong

Ans 6:

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 7:

Class : Class 8

Ans 8:

Class : Class 8
Answer is C

Ans 9:

Class : Class 4
ans is c

Ans 10:

Class : Class 7
All transversal lines look perpendicular

Ans 11:

Class : Class 7
This question is itself wrong..

Ans 12:

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

Ans 13:

Class : Class 7
it should be C

Ans 14:

Class : Class 8
do not worry sof will make the same mistake on paper

Ans 15:

Class : Class 6

Ans 16:

Class : Class 7
Master answer required

Ans 17:

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

Ans 18:

Class : Class 8
It's cofusing

Ans 19:

Class : Class 7

Ans 20:

Class : Class 5
question itself is wrong

Ans 21:

Class : Class 6
Ans is C..... Olympiad Trainer please give master answer or solution.

Ans 22:

Class : Class 8
The answer should be C

Ans 23:

Class : Class 7

Ans 24:

Class : Class 6
How is the answer B?

Ans 25:

Class : Class 5
the answer should be C

Ans 26:

Class : Class 9

Ans 27:

Class : Class 5

Ans 28:

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

Ans 29:

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 10
no , its b.

Ans 2:

Class : Class 4
d

Ans 3:

Class : Class 8
d

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
how

Ans 2:

Class : Class 7
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 3:

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 4:

Class : Class 8

Ans 5:

Class : Class 6
It is c

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5
'c' = correct

Ans 8:

Class : Class 4
yes

Ans 9:

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

Ans 10:

Class : Class 3
C

Ans 11:

Class : Class 5
D cannot be the answer at all.

Ans 12:

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

Ans 13:

Class : Class 5
How

Ans 14:

Class : Class 4

Ans 15:

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

Ans 16:

Class : Class 8
i also got it wrong

Ans 17:

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

Ans 18:

Class : Class 6
it is d

Ans 19:

Class : Class 8
All figures have perpendicular lines

Ans 20:

Class : Class 8

Ans 21:

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

Ans 22:

Class : Class 6

Ans 23:

Class : Class 7

Ans 24:

Class : Class 5

Ans 25:

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

Ans 26:

Class : Class 4

Ans 27:

Class : Class 7
CONFUSING QUESTION

Ans 28:

Class : Class 8

Ans 29:

Class : Class 8

Ans 30:

Class : Class 8
But what about the curved arrow

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 9

Ans 2:

Class : Class 8
none of the options is correct

Ans 3:

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 4:

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 5:

Class : Class 8
None of the given options is correct .

Ans 6:

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

Ans 7:

Class : Class 7
according to bodmas d option is correct

Ans 8:

Class : Class 9
it should be 0.166674175

Ans 9:

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

Ans 10:

Class : Class 8
Ya Parth Kaushish you are right. Got it Vihaan :) Thanks

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
none of the options are correct

Ans 13:

Class : Class 6

Ans 14:

Class : Class 6
It should be 0.1666731750

Ans 15:

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

Ans 16:

Class : Class 7

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 3
TENS

Ans 3:

Class : Class 4
C

Ans 4:

Class : Class 6
tens

Ans 5:

Class : Class 6

Ans 6:

Class : Class 3
TENS

Ans 7:

Class : Class 4

Ans 8: