International Maths Olympiad Forum By SOF Olympiad Trainer - Page 649

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 4

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 3
C

Ans 5:

Class : Class 6
yes

Ans 6:

Class : Class 6

Ans 7:

Class : Class 8

Ans 8:

Class : Class 6

Ans 9:

Class : Class 6
it is d

Ans 10:

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 11:

Class : Class 5
'c' = correct

Ans 12:

Class : Class 6
It is c

Ans 13:

Class : Class 8

Ans 14:

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

Ans 15:

Class : Class 7

Ans 16:

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

Ans 17:

Class : Class 5

Ans 18:

Class : Class 9
But what about the curved arrow

Ans 19:

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

Ans 20:

Class : Class 5
How

Ans 21:

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

Ans 22:

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

Ans 23:

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 24:

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 25:

Class : Class 9
All figures have perpendicular lines

Ans 26:

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

Ans 27:

Class : Class 8
i also got it wrong

Ans 28:

Class : Class 6
how

Ans 29:

Class : Class 7
CONFUSING QUESTION

Ans 30:

Class : Class 5

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Subject :IMO    Class : Class 6

Ans 1:

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 2:

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

Ans 3:

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

Ans 4:

Class : Class 9

Ans 5:

Class : Class 6
It should be 0.1666731750

Ans 6:

Class : Class 7

Ans 7:

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 8:

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

Ans 9:

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

Ans 10:

Class : Class 6
none of the options are correct

Ans 11:

Class : Class 9
it should be 0.166674175

Ans 12:

Class : Class 7
according to bodmas d option is correct

Ans 13:

Class : Class 8
none of the options is correct

Ans 14:

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

Ans 15:

Class : Class 6

Ans 16:

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

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
TENS

Ans 2:

Class : Class 4
C

Ans 3:

Class : Class 3
TENS

Ans 4:

Class : Class 5

Ans 5:

Class : Class 4
C

Ans 6:

Class : Class 7

Ans 7:

Class : Class 2
tens

Ans 8:

Class : Class 4

Ans 9:

Class : Class 3

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Subject :IMO    Class : Class 3

Post Your Answer

Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
its given c as the ans in the solutions pls explain how

Ans 2:

Class : Class 8

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
There are four equations P Q R=75; Q R S=90; P R S=100; Q S P=80Add them up all. You will get 3P 3Q 3R 3S=345. This means P Q R S=115We can replace the value of P Q R=75 in the above to get the value of S which would be 40. From the second equation, we can get the total value of Q R 40=90 as 50

Ans 2:

Class : Class 6
Spaces is " ", the value disappeared after I posted the comment

Ans 3:

Class : Class 4

Ans 4:

Class : Class 5

Ans 5:

Class : Class 6
How is this question done

Ans 6:

Class : Class 5

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
The correct answer is a because 1/2 < 2/3 < 3/4 < 4/5 < 5/6 < 6/7 < 7/8 < 8/9...

Ans 2:

Class : Class 3
If they tell increase by addition or multiplication , we'll know whether answer is C or A otherwise both answers are right

Ans 3:

Class : Class 7
my answer is d

Ans 4:

Class : Class 8
in my opinion both a and c are correct

Ans 5: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 6:

Class : Class 8
the correct answer is c

Ans 7:

Class : Class 4

Ans 8:

Class : Class 10

Ans 9:

Class : Class 7
C

Ans 10:

Class : Class 5
correct answer is C as 5/6*6/6= 30/36 but resultant fraction will always be 5/6

Ans 11:

Class : Class 10

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
I do not think that the correct answer is A

Ans 3:

Class : Class 10
B is correct

Ans 4:

Class : Class 8
ANSWER B IS ONLY CORRECT

Ans 5:

Class : Class 10
According to me, B is the answer....

Ans 6:

Class : Class 8
yes,B is the correct answer.Not A.

Ans 7:

Class : Class 7
B is the correct answer. A cannot be the correct answer as

Ans 8:

Class : Class 9
b is correct

Ans 9:

Class : Class 6
I also think B is correct

Ans 10:

Class : Class 10

Ans 11:

Class : Class 9
B is the correct answer since, the second portion in option A doesn't satisfy the order

Ans 12:

Class : Class 9
i think B is correct answer

Ans 13:

Class : Class 6
B is correct and I am gonna support B

Ans 14:

Class : Class 7
B IS THE RIGHT ANSWER

Ans 15:

Class : Class 10
Option b will be correct. This question is there in IMO Workbook and there the answer is b only

Ans 16:

Class : Class 9
B is correct not A

Ans 17:

Class : Class 6
B is correct answer

Ans 18:

Class : Class 9
It is obviously b.

Ans 19:

Class : Class 7
B is correct not A

Ans 20:

Class : Class 10
B is correct

Ans 21:

Class : Class 7

Ans 22:

Class : Class 7
Answer is supposed to be B not A

Ans 23:

Class : Class 8
b is the correct answer

Ans 24:

Class : Class 7
both a and b are correct.

Ans 25:

Class : Class 8
The correct answer is B. I am sure.

Ans 26:

Class : Class 8
The answer b is correct as the order of congruence is different in every potion but b is correct

Ans 27:

Class : Class 7
B is correct

Ans 28:

Class : Class 8
ans is b

Ans 29:

Class : Class 9
Yes B is right

Ans 30:

Class : Class 10

Ans 31:

Class : Class 8
B is the correct answer

Ans 32:

Class : Class 7
B is correct

Ans 33:

Class : Class 8
Option (B) is the correct answer

Ans 34:

Class : Class 9

Ans 35:

Class : Class 9
answer is b

Ans 36:

Class : Class 7
Answer B is correct not A

Ans 37:

Class : Class 9
the optoins are the same

Ans 38:

Class : Class 8
It is B

Ans 39:

Class : Class 7

Ans 40:

Class : Class 8
I do not think that the correct answer is A

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