International Maths Olympiad Forum By SOF Olympiad Trainer - Page 820

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Subject :IMO    Class : Class 7

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
If "-"means '+'," * "means'-',"/"means' * ' and ''+''means'/';then 20x 12+4-16/5=?= 20-12/4+16x5= 20-3+16x5= 20-3+80= 80+20-3= 100-3= 97 :) Well I mixed it up in the last part, so it doesn't count as an answer.

Ans 2:

Class : Class 6
Ans is 97

Ans 3:

Class : Class 5
it was easy if i knew it was a bodmass rule,, my answer came out to be 80 as i didnt put the bodmass rule

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 9
Yes correct answer is D. What they have given is wrong

Ans 2:

Class : Class 7
Answer to this should be D.C cannot be the correct answer.

Ans 3:

Class : Class 5
in my opinion the answer should be D

Ans 4:

Class : Class 8
the answer is = [ D ] MM = 2000 MDCCX = 1680 MCDLX = 1459 MXLIX = 1049 CMLI = 951 LX = 60

Ans 5:

Class : Class 5
I agree with you because 2000> 1710> 1460> 1049> 951> 60 and not 60> 951> 1460> 1049> 2000> 1710.

Ans 6:

Class : Class 6
The answer will be option D.

Ans 7:

Class : Class 5
I agree with you because D is correct.

Ans 8:

Class : Class 3
yes i agree

Ans 9:

Class : Class 10
My answer is D

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 7
there are so many wrong questions like this in sof. i request all to contact all to sof

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 10
Answer:B

There was a mistake in the options. It has been corrected now.
Solution
1535+279 = 1814
1984-164 = 1820
Even number between 1814 and 1820 are 1816 and 1818
Sum of 1816 + 1818 = 3634

Ans 2:

Class : Class 10
Answer:B

There was a mistake in the options. It has been corrected now.
Solution
1535+279 = 1814
1984-164 = 1820
Even number between 1814 and 1820 are 1816 and 1818
Sum of 1816 + 1818 = 3634

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 3
Yes I agree with Sanjivani Saha that Kushan is correct The answer given by SOF is wrong

Ans 3:

Class : Class 7
the answer is (B)

Ans 4:

Class : Class 2
Answer is B only as it is written respectively and accordingly and - signs are shown.

Ans 5:

Class : Class 5
Answer is B

Ans 6:

Class : Class 3
only A is correct as term respectively is used

Ans 7:

Class : Class 7
The answer given by SOF is wrong.Please don't confuse us.

Ans 8:

Class : Class 3
answer is wrong because given term respectively is givenabhishree singh lucknow india

Ans 9:

Class : Class 6
both answers A

Ans 10:

Class : Class 3
it was a trick question and answer should be D only

Ans 11:

Class : Class 1
The answer is "B".sofor is wrong

Ans 12:

Class : Class 8
kushaan is correct.Answer is B.Their answer is incorrect.SOF ofte makes mistakes.It is very bad

Ans 13:

Class : Class 7
(B)

Ans 14:

Class : Class 8
Answer is A

Ans 15:

Class : Class 5
Answer is b. Their answer is wrong

Ans 16:

Class : Class 4
It is very horrified that answer given is wrong..............should be B.

Ans 17:

Class : Class 3
Answer is A because it is written respectively

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Subject :IMO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1
There are 25 hexagons in the figure. For 2/5 to be left unshaded, 3/5 of them must be shaded. Now, total no. of hexagons which must be shaded are:- (3/5)x25=15

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 5
Answer should’ve been D

Ans 2:

Class : Class 6
Correct Answer is D. Q is 4, hence, 6 less than 10.

Ans 3:

Class : Class 4
Answer is 4 option B

Ans 4:

Class : Class 5
The answer is D. Value of Q is 4 and 4 is 6 less than 10.

Ans 5:

Class : Class 5
4 should’ ve been the answer given by them

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4
good

Ans 2:

Class : Class 3
The logic is simple here.. Rohan delivers newspapers on weekdays (i.e) Monday to Friday. The only condition that would address the number of papers delivered on Sunday is if he deliver's 14 more papers on Sunday than on weekdays. So the answer is 1.

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Answer is C

Ans 2:

Class : Class 10
Answer : B
Milk left for the evening = 1 - 2/8 = 6/8
Milk consumed in the evening = 3/5 of 6/8 = 3/5 x 6/8 = 18/40
Total milk consumed = 2/8 + 18/40 = 28/40
Milk left = 1 -28/40 = 12/40 = 3/10

Ans 3:

Class : Class 5
3/10 is correct

Ans 4:

Class : Class 9
2/8 (=10/40) in the morning left only 6/8 3/5 of 6/8 = 18/40 leftover milk is = 1-(10/40) - (18/40) = 12/40 = 3/10

Ans 5:

Class : Class 4
3/20 is correct

Ans 6:

Class : Class 4
Answer is option B or 3/10

Ans 7:

Class : Class 4
the correct answer is 3/20 which is C

Ans 8:

Class : Class 6
It is 3/20 because- if you add 2/8 and 3/5 =17/20 which he drank =20/20-17/20=3/20

Ans 9:

Class : Class 9
blah blah blahwhatever

Ans 10:

Class : Class 9

Ans 11:

Class : Class 3

Ans 12:

Class : Class 5

Ans 13:

Class : Class 6
3/20Thank you Priti Srivastav

Ans 14:

Class : Class 8
3/10

Ans 15:

Class : Class 5
3/20

Ans 16:

Class : Class 4
3/10

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