International Maths Olympiad Forum By SOF Olympiad Trainer - Page 718

User Forum

Subject :IMO    Class : Class 2

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 9

Ans 2:

Class : Class 6
D is the correct answer

Ans 3:

Class : Class 6
some are saying a, some are saying b, some are saying c and some are saying d. what is the correct answer??????

Ans 4:

Class : Class 10
the answer is b

Ans 5:

Class : Class 9
According to me ,it is C

Ans 6:

Class : Class 6
Sorry I meant B

Ans 7:

Class : Class 8

Ans 8:

Class : Class 10
sorry, a is the correct one

Ans 9:

Class : Class 6
the correct answer is c

Ans 10:

Class : Class 7
According to me, A is the correct answer.

Ans 11:

Class : Class 6
The answer is A!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Kindly adhere!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 12:

Class : Class 6
its b because say if you take 6,and you say 2 and 3 are divisible by it. then they are saying that their sum and diff is also divisible but 2 3 is 5 which is not divisible by 6

Ans 13:

Class : Class 6
muuuuuuuuuuuuuuuuuusko munda

Ans 14:

Class : Class 8
according to me , its B as if two numbers are divisible by a number , their sum and difference is not divisible by the same number . For example : 2

Ans 15:

Class : Class 10
b is correct

Ans 16:

Class : Class 10
b is correct

Ans 17:

Class : Class 10
its b

Ans 18:

Class : Class 8
Answer is A

Ans 19:

Class : Class 10
the answer should be b

Ans 20:

Class : Class 6
ans is b

Ans 21:

Class : Class 9
THE CORRECT ANSWER IS A

Ans 22:

Class : Class 7
a is correct

Ans 23:

Class : Class 8
statement 1- The definition of perfect number on google is the same as the definition of perfect number provided by the question as for statement 2 eg 6 and 4 is divisible by 2 so 6 4= 10 div by 2 and 6-4= 2 also div by 2. so people who say answer is b c or d are complete idiots

Ans 24:

Class : Class 6

Ans 25:

Class : Class 6
i think it is c

Ans 26:

Class : Class 9
1 is a factor of 6

Ans 27:

Class : Class 6
b is the correct answer

Ans 28:

Class : Class 6
it should be A because if we take 39 and 26 as multiples and 13 as factor then 39-26=13. which is divisible by 13

Ans 29:

Class : Class 7

Ans 30:

Class : Class 7
it should be C

Ans 31:

Class : Class 8
statement 1- The definition of perfect number on google is the same as the definition of perfect number provided by the question as for statement 2 eg 6 and 4 is divisible by 2 so 6 4= 10 div by 2 and 6-4= 2 also div by 2. so people who say answer is b c or d are complete idiots

Ans 32:

Class : Class 7
b

Ans 33:

Class : Class 8
The answer can only be C. For the first statement, If you take an example as 6, it will be 1 2 3=6 which means statement 1 is false as it is written that it should be double. Statement 2 is true. For example, take 25 and 20 and the number as 5. 25 20=45(Divisible by 5) and 25-20=5(Divisible by 5)

Ans 34:

Class : Class 8
a because lets take 6, its factors are 1,2,3,6. When we add these numbers we get 12 which is twice 6

Ans 35:

Class : Class 8
I am confused what is the answer because some are saying a , some are saying b ,some are saying c and some are saying d .

Ans 36:

Class : Class 8
correct answer is aaaaaaaaaaaaaaaaaaaaaaaaa

Ans 37:

Class : Class 6
THE ANSWER SHOULD BE NONE OTHER THAN C. NOT A , NOT B OR NOR D. NOOOOOO ABD

Ans 38:

Class : Class 7
The ans is a becauseStatement 1: if we take the number 6 its factors except 6 are 1,2,3 there sum is 6 so it is a perfect numberStatement 2: If we take 9 and 27 they are divisible by 3 so their sum which is 36 is also divisible by 3 and there diffrence is 18 which is divisible by 3.

Post Your Answer

Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
The option is A

Ans 3:

Class : Class 7
a

Ans 4:

Class : Class 8

Ans 5:

Class : Class 6
a

Post Your Answer

Subject :IMO    Class : Class 6

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
Answer is periods

Ans 2:

Class : Class 6
What is the meaning of this question? I thought a period means a full stop?

Ans 3:

Class : Class 9

Post Your Answer

Subject :IMO    Class : Class 7

Ans 1:

Class : Class 10
the angles are 80 degree and 100 degree. Method- 4:5=4x and 5x , 4x+5x=180 , 9x=180, x=180/9, x=20, therefore, 4:5= 4*20and 5*20 4:5=80 and 100

Ans 2:

Class : Class 7
80,100

Post Your Answer

Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5
THE ANSWER IS4

Ans 2:

Class : Class 6
THE ANSWER IS 12 AS IF YOU LOKE AT ACUTE ANGLES IN THE EXTERIOR YOU CAN SEE 2 RIGHT ANGLES

Ans 3:

Class : Class 5
D.8

Ans 4:

Class : Class 5
It should be 4

Ans 5:

Class : Class 7
The answer is 4

Ans 6:

Class : Class 5
B

Ans 7:

Class : Class 4
Look closely. The answer is 8. If you look at the cuts in the ribbon which looks like a V at the top, you can see the right angle by tilting your device. Same follows with the other cuts

Ans 8:

Class : Class 5

Ans 9:

Class : Class 6

Ans 10:

Class : Class 6

Ans 11:

Class : Class 8
How ??

Ans 12:

Class : Class 7
It is 8

Ans 13:

Class : Class 6
IT IS 12

Ans 14:

Class : Class 8
answer is 4

Ans 15:

Class : Class 8
The correct answer is 4. It cannot be 8 at all costs. There is a error!!!!!!!!!!

Ans 16:

Class : Class 7
The answer is obviously 4.There cannot be 8 at all costs

Ans 17:

Class : Class 7

Ans 18:

Class : Class 7
Thank you very much friends if you all co-operate me, Nilarka and Khushie!

Ans 19:

Class : Class 6
Everybody look carefully ! We use to be clever know we are not.

Ans 20:

Class : Class 9
it cannot be 8 at all costs

Ans 21:

Class : Class 8
4

Ans 22:

Class : Class 5
Look carefully, even I got to know the answer after reading the comments

Ans 23:

Class : Class 9
It cannot be 8 at all costs There is an error in this question

Ans 24:

Class : Class 9
IT IS 8 ONLY

Ans 25:

Class : Class 9

Ans 26:

Class : Class 5

Ans 27:

Class : Class 6
answer is 4. how can it be 8

Ans 28:

Class : Class 5
4/8 votei vote 4 they have done wrong with no solution

Ans 29:

Class : Class 9
So report the error man

Ans 30:

Class : Class 7
The answer is 4 definitely!

Ans 31:

Class : Class 4
No ,the answer is 8 because those small angles are also right angle

Ans 32:

Class : Class 7
Very good Nilarka Pahari and Khushie. Friends , the correct answer is B only. Just try to see . Tilt your head to your right and try to see the cuts at the end of the ribbons . You will find the error of your own. Did you find that? I know that only 5 to 37 percent of you can nfind the eight angles. Be very accurate and intelligent. I also did the same mistake while giving the test . Please look carefully!

Ans 33:

Class : Class 6
On the outside, we see 4 right angles easily. But if you turn your device 90 degrees left/right, you will see that the angle formed by the sharp edges of the figure also measures 90 degrees. It is just not visible due to the angle you look at it.

Ans 34:

Class : Class 6

Ans 35:

Class : Class 6
I think soumyaraj Roy is correct as there are no other angles that are exactly 90 degrees.

Ans 36:

Class : Class 6
No, it is 8. You can see 4 of them easily. The other four are hidden between the sharp edges of the figure. Tilt it 2 find out.

Ans 37:

Class : Class 9
It is Eight . If you tilt the small angles you will notice that there are eight right angles

Ans 38:

Class : Class 4
there cannot be 8

Ans 39:

Class : Class 6
The answer is D(8) because if we look at the V from a Tilted angle then it is a 90 degree angle. 4 V4 right angles4 4= 8

Ans 40:

Class : Class 6
confusing but obvious

Ans 41:

Class : Class 8
Actually it should be 4 or 12

Post Your Answer

Subject :IMO    Class : Class 5

Post Your Answer

Subject :IMO    Class : Class 4

Post Your Answer

Subject :IMO    Class : Class 5

Post Your Answer