International Maths Olympiad Forum By SOF Olympiad Trainer - Page 713

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Subject :IMO    Class : Class 7

Ans 1:

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 2:

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

Ans 3:

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 4:

Class : Class 8
the correct answer is c

Ans 5:

Class : Class 10

Ans 6: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 7:

Class : Class 7
my answer is d

Ans 8:

Class : Class 4

Ans 9:

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

Ans 10:

Class : Class 10

Ans 11:

Class : Class 7
C

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Subject :IMO    Class : Class 7

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 7
both a and b are correct.

Ans 4:

Class : Class 7
Answer B is correct not A

Ans 5:

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

Ans 6:

Class : Class 10

Ans 7:

Class : Class 7
B is correct

Ans 8:

Class : Class 6
I also think B is correct

Ans 9:

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

Ans 10:

Class : Class 3
B is correct

Ans 11:

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

Ans 12:

Class : Class 7
B is correct not A

Ans 13:

Class : Class 10

Ans 14:

Class : Class 7
B IS THE RIGHT ANSWER

Ans 15:

Class : Class 6
B is correct answer

Ans 16:

Class : Class 9
i think B is correct answer

Ans 17:

Class : Class 10
the optoins are the same

Ans 18:

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

Ans 19:

Class : Class 9
It is obviously b.

Ans 20:

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

Ans 21:

Class : Class 9

Ans 22:

Class : Class 7

Ans 23:

Class : Class 7

Ans 24:

Class : Class 8
ans is b

Ans 25:

Class : Class 9
Yes B is right

Ans 26:

Class : Class 9
B is correct not A

Ans 27:

Class : Class 8
b is the correct answer

Ans 28:

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

Ans 29:

Class : Class 10
B is correct

Ans 30:

Class : Class 8
ANSWER B IS ONLY CORRECT

Ans 31:

Class : Class 9
b is correct

Ans 32:

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

Ans 33:

Class : Class 7
B is correct

Ans 34:

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

Ans 35:

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

Ans 36:

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

Ans 37:

Class : Class 9
answer is b

Ans 38:

Class : Class 8

Ans 39:

Class : Class 8
B is the correct answer

Ans 40:

Class : Class 8
It is B

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8
I think all options are the correct answers

Ans 2:

Class : Class 10
how

Ans 3: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 4:

Class : Class 9
I think (B) is correct

Ans 5:

Class : Class 7

Ans 6:

Class : Class 10
AAA criterion does not exist

Ans 7:

Class : Class 9
Every answer except c is right

Ans 8:

Class : Class 7
I think it should be (B)

Ans 9:

Class : Class 8
Does anyone really know?

Ans 10:

Class : Class 8
Ans is d

Ans 11:

Class : Class 10
THE CORRECT ANSWER SHOULD BE (B) AS AAA PROPERTY DOESN'T EXIST

Ans 12:

Class : Class 9
Yes AAA criterion does not exist

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
option a is correct

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
According to me the correct answer is C]

Ans 4:

Class : Class 7
its option a i guess

Ans 5:

Class : Class 7
its option A I guess

Ans 6:

Class : Class 10
sorry option a

Ans 7:

Class : Class 7
correct option is D all the options are correct

Ans 8:

Class : Class 5
option C is correct so obvios

Ans 9:

Class : Class 10
option b

Ans 10:

Class : Class 6
According to me the correct answer is C]

Ans 11:

Class : Class 6

Ans 12:

Class : Class 7
THE RIGHT OPTION IS (B)

Ans 13:

Class : Class 6
D

Ans 14:

Class : Class 6
it's D

Ans 15:

Class : Class 6
b

Ans 16:

Class : Class 7
option a

Ans 17:

Class : Class 8

Ans 18:

Class : Class 8
right option is C

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Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :IMO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8
fdsdyugfkojnbklknbvgio

Ans 4:

Class : Class 8
1000

Ans 5:

Class : Class 9
6*200=1200Discount - 200NetPayment = 1000Return Change = 2000-1000=1000

Ans 6:

Class : Class 8
1000

Ans 7:

Class : Class 8
hellow crazy kids

Ans 8:

Class : Class 4
D

Ans 9:

Class : Class 4
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000

Ans 10:

Class : Class 8

Ans 11:

Class : Class 8
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
The answer is A not B

Ans 2:

Class : Class 7
TH ANSWER IS B AGIAN B

Ans 3:

Class : Class 10
if we apply BODMAS on this question, it says to solve the brackets first...

Ans 4:

Class : Class 10
4900 should be the answer as we have to estimate first

Ans 5:

Class : Class 10
It generally mentioned clearly what to do first, the actual subtraction or the estimation by SOF. But here, they asked us to estimate 7268-2427. So,we should first do the actual subtraction. By that the answer is 4800.

Ans 6:

Class : Class 7
What is the point in estimating if we are anyway doing the actual subtraction? It makes sense if we round off the numbers 7268 and 2427 to the nearest hundred and then subtract, but that gives 7300-2400 viz.4900

Ans 7:

Class : Class 7
first we should subtract and than estimate

Ans 8:

Class : Class 7
Can any one explain how is the option B 16 correct?

Ans 9:

Class : Class 7
B is not correct it is 10 as when we divide the quetiont results in 11 and when we round that of we will get 10

Ans 10:

Class : Class 6

Ans 11:

Class : Class 9
The answer must be B)4900 because 7268-2427 = (estimated form) 7300-2400=4900

Ans 12:

Class : Class 7

Ans 13:

Class : Class 7

Ans 14:

Class : Class 9
the ans is 4800

Ans 15:

Class : Class 7
omg seriously? is this a joke?!!

Ans 16:

Class : Class 7
they told us to round the quotient to nearest tens so the answer is not 16 the answer is 10

Ans 17:

Class : Class 8
As there is a bracket, it means that we have to find the difference and then estimate the number.

Ans 18:

Class : Class 6
SUBTRACT AND THE ESTIMATE !!!

Ans 19:

Class : Class 10
guys don't fight people just misunderstood the question also me I got it wrong i put 4800 as i did estimate first then subtract i guess all of us will learn from our mistakes

Ans 20:

Class : Class 9
7268 - 2427 is in bracket . This means first to do subtraction and then estimate the answer to nearest hundreds ...........TRICKY question

Ans 21:

Class : Class 6
Answer is A because when you divide 163/14 you get 11. 11 rounded of to the nearest tens is 10

Ans 22:

Class : Class 7
bruh of which question are u all talking about there is not a option of 4800,4900... i think the answer should be 10 but its showing b how?

Ans 23:

Class : Class 6
A

Ans 24:

Class : Class 10
sorry i meant 4900

Ans 25:

Class : Class 8
WHAT IS THE USE OF ESTIMATING IF WE ARE DOING THE NORMAL SUBTRACTION. THE ANSWER SHOULD BE 4900 AS THE NUMBER 7268 ESTIMATED TO THE NEAREST IS 7300 AND THEE NUMBER 2427 ESTIMATED TO THE NEAREST HUNDRED IS 2400. 7300-2400=4900

Ans 26:

Class : Class 8

Ans 27:

Class : Class 7
THE ANSWER IS A NOT B

Ans 28:

Class : Class 6

Ans 29:

Class : Class 7
We have 7268 – 2427 = 4841 Rounded off 4841 to nearest hundred = 4800

Ans 30:

Class : Class 6
it is simple 7268 - 2427 = 4841 rounded to the nearest hundreds = 4800

Ans 31:

Class : Class 7
first we will do subtraction of 7268 and 2427 that is 4841 then we will estimate 4841 by nearest 100 which is 4800 and the anser is this first i have also done it according to NCERT but when result came then it was this solution

Ans 32:

Class : Class 6

Ans 33:

Class : Class 8

Ans 34:

Class : Class 6

Ans 35:

Class : Class 7
A

Ans 36:

Class : Class 7
Seriously

Ans 37:

Class : Class 7
THERE IS NO ANSWER 4900,4800 BLAH BLAH BRUH !!!!!!!

Ans 38:

Class : Class 4
it means first do subtraction and then estemate

Ans 39:

Class : Class 6
estimate and then subtract

Ans 40:

Class : Class 6
Shreyansh is correct there is no 4800 or anything else,Btw the answer is (a) 10 not (b) 16!!!!

Ans 41:

Class : Class 6
because it is in bracket , we must subtract and then we must round off to nearest hundred

Ans 42:

Class : Class 9
Exactly….Archita

Ans 43:

Class : Class 7
stop fighting

Ans 44:

Class : Class 7
it should be 4900 as we estimate first than subtract

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