International Maths Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
The question is wrong.If A is the answer, solving this quadratic eqn, we get a=10 or -2since the answer is a simplified form of the question, these values of a should also hold for question also. But if we put these vales in the question either LHS or RHS denominator will become 0 making it undefined.the actual procedure is to factorize.=> [(a-3)(a-10)]/(a-10)=[(a 2)(a 2)]/(a 2)=> a-3 = a 2=> -3 = 2 which is absurd. so the question is wrong.

Ans 3:

Class : Class 9
but that is not what we want

Ans 4:

Class : Class 9
i got 5

Ans 5:

Class : Class 9
a2 - 13a + 30 = a2 + 4a + 4 a - 10 a + 2 => (a2 - 13a + 30)(a + 2) = (a2 + 4a + 4)(a - 10) => a3 + 2a2 - 13a2 - 26a + 30a + 60 = a3 - 10a2 +4a2 + 4a - 40 => - 11a2 + 4a + 60 = - 6a2+ 4a - 40 => - 11a2 + 6a2 + 60 + 40 = 0 => - 5a2 + 100 = 0 => 5a2 = 100 => a2 = 20 => a = √20 Insert the value of'a'and you will get the answer.

Post Your Answer

Subject :IMO    Class : Class 4

Match the following.

Column 1----------Column 2

(i) 926543 (p) Smallest 5-digit number
(ii) 10000 (q) Place value of 2 is 2000
(iii) 962540 (r) 100039 when rounded off to nearest 100
(iv) 100000 (s) Successor of 926542


A (i) - (s), (ii) - (p), (iii) - (q), (iv) - (r)
B (i) - (q), (ii) - (r), (iii) - (s), (iv) - (p)
C (i) - (s), (ii) - (r), (iii) - (q), (iv) - (p)
D (i) - (q), (ii) - (p), (iii) - (s), (iv) - (r)


rd

Ans 1:

Class : Class 6
A

Ans 2:

Class : Class 6

Ans 3:

Class : Class 4
a

Ans 4:

Class : Class 6
A

Ans 5:

Class : Class 4

Ans 6:

Class : Class 3

Ans 7:

Class : Class 4
aasefrfefsaxcfbt

Ans 8:

Class : Class 5

Ans 9:

Class : Class 4

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Class:Yes

Ans 2:

Class : Class 4
Option B

Ans 3:

Class : Class 5
oh its not correct question?

Ans 4:

Class : Class 5
a

Ans 5:

Class : Class 5
Whoever gets this question wrong should fail in level 2 mathematics

Ans 6:

Class : Class 4
B

Ans 7:

Class : Class 5
i've done (B)

Ans 8:

Class : Class 6
b

Ans 9:

Class : Class 4
How to identify the left and right side referred in question?

Ans 10:

Class : Class 2

Ans 11:

Class : Class 1
C

Ans 12:

Class : Class 5
B

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6
hey! last time it was a

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7
D

Ans 5:

Class : Class 8
D ,FIRST CALCULATE THE SUM

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
But this time it is d

Post Your Answer

Subject :IMO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
d

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
ahana read the sum correctly...plz.....

Ans 2:

Class : Class 8
ahana dalmia, they said 8 LESS than -24 which is -32 not 8 MORE than -24

Ans 3:

Class : Class 6
it is -16 not -32

Ans 4:

Class : Class 6
the answer is A

Ans 5:

Class : Class 6
Correct ans is A......agree with anika..

Ans 6:

Class : Class 6
how is this a it is c

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 4
C is the correct answer I is not required

Ans 3:

Class : Class 4

Ans 4:

Class : Class 6
C is the correct answer because IXIV is not considered as a roman numeral

Ans 5:

Class : Class 4
IXIV is not a roman numeral

Ans 6:

Class : Class 4
I is not require in front of X ,when after X we have IV

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
the correct answer is C

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
the answer is b only because the second question is, 'the sum of two numbers is ALWAYS smaller than their product.' this statement is definitely false because if we take example of 2 and 2, their product is equal to their sum and if we take 1 and 1, then its product is smaller than its sum. then according to the statement above, answer should be false which should be answer 'B'

Ans 4:

Class : Class 6

Ans 5:

Class : Class 4
correct answer is 'c'

Ans 6:

Class : Class 9

Ans 7:

Class : Class 6
First it says 'A', next it says 'B'. what is the correct answer

Ans 8:

Class : Class 7
The answer is BBecause if we take 1 2=3 but 1x2=2 which is less than the product. Statement ll is false.

Ans 9:

Class : Class 6
The answer is C.Even if the answer is B then how???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Ans 10:

Class : Class 6
Yes, the answer is C. How is it B ???

Ans 11:

Class : Class 5
In I) 0/1 is 0. So the first statement given in the Question is false.

Ans 12:

Class : Class 6

Ans 13:

Class : Class 6

Post Your Answer

Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
jkkkgjhh

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
Not 216 it's 126 AREEN and answer is 9 cm

Ans 2:

Class : Class 5
Perimeter is the length of the boundary. The number of lines that are in outer part of the figure are 14. So, 216/14=9. So, ans is B

Ans 3:

Class : Class 4
Option B

Ans 4:

Class : Class 5
The correct answer is 9 cm which is B

Post Your Answer