International Maths Olympiad Forum By SOF Olympiad Trainer - Page 101

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
hey , it is 90 tenths cause tenths means at the tenths place only . But if if there is another no. like 90 tenths we should multiply . But if you choose hundredth tenths it it will become in thousands value.

Ans 3:

Class : Class 9
thank you

Ans 4:

Class : Class 4
b

Ans 5:

Class : Class 2
C

Ans 6:

Class : Class 3
Ya B

Ans 7:

Class : Class 5
b

Ans 8:

Class : Class 9
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 9:

Class : Class 4
B

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Ok

Ans 2:

Class : Class 6
If the movie is for 2 hours it can be shown 6 times between 12 noon and 12 midnight which is 12 hours. 12/2=6. The answer is B.

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 3

Ans 2:

Class : Class 7
it should be 103 because 3+5=8+15=23+45=68+35=103 means first +5 then +15 then dirctly +30=45 then -10=+35

Ans 3:

Class : Class 8
It should be 145.

Ans 4:

Class : Class 6
B

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Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 2
Unfair

Ans 2:

Class : Class 8
SOF CLARIFY MY DOUBT ASAP

Ans 3:

Class : Class 5
The correct answer is B.

Ans 4:

Class : Class 6

Ans 5:

Class : Class 3
THE CORRECT ANS: IS B

Ans 6:

Class : Class 5
Whole question is wrong. The solution is also wrong. The 'squares' in the question and the solution has to be changed to 'triangles. The only thing which was right is the diagram in the solution.

Ans 7:

Class : Class 5
Correct answer is B

Ans 8:

Class : Class 4
it should be 5 as that one is a rhombus

Ans 9:

Class : Class 8
B as the rhombus if turned slightly diagonally will form a square and 5 squares are already there

Ans 10:

Class : Class 8

Ans 11:

Class : Class 9
The correct answer is B

Ans 12:

Class : Class 6
The correct answer is C because one is the outer square, then there are 4 squares inside it and one square is tilted so that will also count.

Ans 13:

Class : Class 4
5

Ans 14:

Class : Class 8

Ans 15:

Class : Class 4
there are 10 triangles:A,B,C,D,E,F,G,H,BC AND GH

Ans 16:

Class : Class 4
It should be 6 as the first one is the outer square(biggest one) and there are 4 small squares inside it, which makes 5 squares. There is also one square inside the figure which is tilted. It looks like a rhombus but isn't a rhombus because a rhombus doesn't have 4 angles measuring 90 degrees.

Ans 17:

Class : Class 2
so so so so so so wrong. They wont even let us put this as an error, when we put this as an error, it will say 'Please enter valid error' when it is a valid error. So bad SOF.

Ans 18:

Class : Class 7
5 a 5

Ans 19:

Class : Class 4
wrong anwer it should be 8

Ans 20:

Class : Class 7
yes,b is the right answer. we should just turn the diamond little bit. it will become square. and the other 5 squares.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
D

Ans 4:

Class : Class 5
Answer is B

Ans 5:

Class : Class 8
B AS we convert mixed to improper fraction so 4 1/2 = 2 x 4 1 /2 = 9/2 2 1/8 = 8 x 2 1 / 8 = 17/8 Then we find equivalent fractions 9/2 = 9 x 4 / 2 x 4 = 36 / 8 and 17 / 8 will remain same as we know. Now we do subtraction. 36 / 8 - 17 / 8 = 36 - 17 / 8 = 19 / 8 = 19 divided by 8= Quotient=2, Remainder=3 so 2 3/8

Ans 6:

Class : Class 7
B

Ans 7:

Class : Class 4
ANS;B

Ans 8:

Class : Class 6
The correct answer should be Option B. By Ankush

Ans 9:

Class : Class 7
the answer is b

Ans 10:

Class : Class 7

Ans 11:

Class : Class 7

Ans 12:

Class : Class 4
D

Ans 13:

Class : Class 9
B

Ans 14:

Class : Class 7
b because if we divide the into 2 part i.e 4 and 1/2 and 2 and 1/8 means 4-2 whloes is 2 1/2 and 1/8 way 1/2=2/4=4/8-1/8=3/8 hence ans 2 wholes and 3/8

Ans 15:

Class : Class 4
How is it B? Guys somebody OH PLEASE explain! I don't understand ANYTHING:(

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 9

Ans 2:

Class : Class 10
b

Ans 3: (Master Answer)

Class : Class 1

Ans 4:

Class : Class 8
sorry guys ans is b it is a parallelogram hence it has no lines of symmetry

Ans 5:

Class : Class 7
ans b symitrical figures are that are diveided eqally

Ans 6:

Class : Class 4

Ans 7:

Class : Class 4
THE ANSWER HAS TO BE C ...HOW CAN IT BE B???A rhombus is symmetrical

Ans 8:

Class : Class 8

Ans 9:

Class : Class 5
The ans is C .Q fig has a line of symmetry

Ans 10:

Class : Class 8
It should be C , for sure, kindly make change

Ans 11:

Class : Class 5
bbbbbshb

Ans 12:

Class : Class 6
ans should be D

Ans 13:

Class : Class 4
the answer is C

Ans 14:

Class : Class 7
answer is C

Ans 15:

Class : Class 9
ANSWER SHOULD BE C. Q HAS A LINE OF SYMMETRY.

Ans 16:

Class : Class 6
how could the answer be b it has to be c

Ans 17:

Class : Class 4
Answer should be C

Ans 18:

Class : Class 7
It should be C

Ans 19:

Class : Class 4
Answer is C

Ans 20:

Class : Class 4
correct answer is B PLEASE mind SOF

Ans 21:

Class : Class 5
qqqqq

Ans 22:

Class : Class 4
Ans is c

Ans 23:

Class : Class 5
yes it should be c

Ans 24:

Class : Class 8
answer is C

Ans 25:

Class : Class 7
Ans 15:Anirudh Bhattacharjee from THE LEXICON INTERNATIONAL SCHOOL KALYANI NAGAR PUNR, PuneClass : >Class 5plz dont fight, if it comes in IMO question paper, parallelogram has no line of symmetry.It has a line of symetery Answer 15

Ans 26:

Class : Class 8
plz dont fight, if it comes in IMO question paper, parallelogram has no line of symmetry.

Ans 27:

Class : Class 4
C

Ans 28:

Class : Class 4

Ans 29:

Class : Class 8
SOF olympiad..please make changes to your tests when you have reported errors...or atleast revert back to students who report error.. Ans shd be C...but if you do not make amendments..you are confusing kids

Ans 30:

Class : Class 5

Ans 31:

Class : Class 5
Ans=b

Ans 32:

Class : Class 6
if you do not believe c is correct why don't you check in google . Q is rhombus so check does a rhombus have line of symmetry

Ans 33:

Class : Class 7
Answer 1:Q is a parallelogram. It has no line of symmetry. If you don't believe me, please check on google and search ''Does parallelogram has a line of symmetry or not. -Kushagra Chaturvedi

Ans 34:

Class : Class 8
see it ISN'T a rhombus it is a parallelogram Master answer explain ASAP as this question can come in IMO

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 10
c

Ans 2:

Class : Class 9
The correct answer is option C.

Ans 3:

Class : Class 5
The correct answer is option B. Please fix this problem

Ans 4:

Class : Class 8
a

Ans 5:

Class : Class 8

Ans 6:

Class : Class 8

Ans 7:

Class : Class 5
CLASS 5TH

Ans 8:

Class : Class 5

Ans 9:

Class : Class 4
A

Ans 10:

Class : Class 8

Ans 11:

Class : Class 9
The correct answer is C as Toffee means cake

Ans 12:

Class : Class 5

Ans 13:

Class : Class 5
We cut cake on birthday. But here cake is called butter. The right answer is B

Ans 14:

Class : Class 5
The correct answer is C

Ans 15:

Class : Class 4
Answer is C

Ans 16:

Class : Class 9
The correct answer is C

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 9
A because the two small lines are not facing towards each other

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
Why did they give option C bigger than the others. The figure should have been of same size???????????????

Ans 6:

Class : Class 8
I DIDNT KNOW THE ANSWER FIRST

Ans 7:

Class : Class 2
A because the others have more than one line of symmetry

Ans 8:

Class : Class 5
Even there are no endpoints to two lines of symmetry in A option. And the figure in o has option C has a very large diameter and has only one line of symmetry

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