International Maths Olympiad Forum By SOF Olympiad Trainer - Page 651

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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:

Class : Class 8
Does anyone really know?

Ans 4: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 5:

Class : Class 9
Every answer except c is right

Ans 6:

Class : Class 7
I think (B) is correct

Ans 7:

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

Ans 8:

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

Ans 9:

Class : Class 8
Ans is d

Ans 10:

Class : Class 9
Yes AAA criterion does not exist

Ans 11:

Class : Class 7

Ans 12:

Class : Class 10
AAA criterion does not exist

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
its option A I guess

Ans 3:

Class : Class 7
option a is correct

Ans 4:

Class : Class 7
THE RIGHT OPTION IS (B)

Ans 5:

Class : Class 7
its option a i guess

Ans 6:

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

Ans 7:

Class : Class 8

Ans 8:

Class : Class 6
option C is correct so obvios

Ans 9:

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

Ans 10:

Class : Class 10
sorry option a

Ans 11:

Class : Class 6

Ans 12:

Class : Class 10
option b

Ans 13:

Class : Class 6
b

Ans 14:

Class : Class 6
it's D

Ans 15:

Class : Class 7
option a

Ans 16:

Class : Class 8
right option is C

Ans 17:

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

Ans 18:

Class : Class 6
D

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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 8
1000

Ans 2:

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

Ans 3:

Class : Class 4
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000

Ans 4:

Class : Class 8
fdsdyugfkojnbklknbvgio

Ans 5:

Class : Class 8
hellow crazy kids

Ans 6:

Class : Class 8

Ans 7:

Class : Class 8
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Ans 8:

Class : Class 8

Ans 9:

Class : Class 4

Ans 10:

Class : Class 8
1000

Ans 11:

Class : Class 4
D

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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

Ans 2:

Class : Class 7
THE ANSWER IS A NOT B

Ans 3:

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 4:

Class : Class 7

Ans 5:

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

Ans 6:

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 7:

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

Ans 8:

Class : Class 6
THERE IS NO ANSWER 4900,4800 BLAH BLAH BRUH !!!!!!!

Ans 9:

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

Ans 10:

Class : Class 8

Ans 11:

Class : Class 8
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 12:

Class : Class 6
SUBTRACT AND THE ESTIMATE !!!

Ans 13:

Class : Class 6

Ans 14:

Class : Class 6
A

Ans 15:

Class : Class 7
first we should subtract and than estimate

Ans 16:

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

Ans 17:

Class : Class 6

Ans 18:

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

Ans 19:

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

Ans 20:

Class : Class 6
TH ANSWER IS B AGIAN B

Ans 21:

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

Ans 22:

Class : Class 7
Answer is A because when you divide 163/14 you get 11. 11 rounded of to the nearest tens is 10

Ans 23:

Class : Class 6
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 24:

Class : Class 6
A

Ans 25:

Class : Class 8
sorry i meant 4900

Ans 26:

Class : Class 6
stop fighting

Ans 27:

Class : Class 7

Ans 28:

Class : Class 6

Ans 29:

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 30:

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

Ans 31:

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 32:

Class : Class 6
estimate and then subtract

Ans 33:

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

Ans 34:

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

Ans 35:

Class : Class 9
the ans is 4800

Ans 36:

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 37:

Class : Class 8
Exactly….Archita

Ans 38:

Class : Class 7
Seriously

Ans 39:

Class : Class 8

Ans 40:

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

Ans 41:

Class : Class 7
The answer is A not B

Ans 42:

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

Ans 43:

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 44:

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

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 8
The answer made by me was the same.The answer in the book is 57.50

Ans 2:

Class : Class 4
D. 80.5

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