International Maths Olympiad Forum By SOF Olympiad Trainer - Page 713

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
the answer is c

Ans 2:

Class : Class 7
MY ANSWER IS [C] ..

Ans 3:

Class : Class 3

Ans 4:

Class : Class 3
c

Ans 5:

Class : Class 9
c is the answer

Ans 6:

Class : Class 7
this is right now i have understood

Ans 7:

Class : Class 7
how c, has been come

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Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :IMO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 10

Ans 2:

Class : Class 7
I dont see how option C is the correct option

Ans 3:

Class : Class 8
how is the answer C ?

Ans 4:

Class : Class 9
please xplain this question

Ans 5:

Class : Class 9
answer is option c

Ans 6:

Class : Class 8
I think the answer should be B

Ans 7:

Class : Class 8
Very complicated answer shown

Ans 8:

Class : Class 10

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
a

Ans 2:

Class : Class 6
SHOULD BE 18?

Ans 3:

Class : Class 3
it is 18 and 8

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
incomplete

Ans 2:

Class : Class 4
incomplete question

Ans 3:

Class : Class 5
incomplete question .can not find the answer

Ans 4:

Class : Class 8
incomplete question, no solution

Ans 5:

Class : Class 8
incomplete question with no solution

Ans 6:

Class : Class 7

Ans 7:

Class : Class 10

Ans 8:

Class : Class 10
question is completed in pdf

Ans 9:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 10:

Class : Class 8

Ans 11:

Class : Class 9
Incomplete Question.

Ans 12:

Class : Class 6
Incomplete question.

Ans 13:

Class : Class 8
I am speechless

Ans 14:

Class : Class 7
incomplete question

Ans 15:

Class : Class 6

Ans 16:

Class : Class 10

Ans 17:

Class : Class 8

Ans 18:

Class : Class 7
SOF IS THE WORST

Ans 19:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 20:

Class : Class 6
incompete question

Ans 21:

Class : Class 6
this question is wrong because you have only given the cost of the first hour

Ans 22:

Class : Class 8
Incomplete question .this had never happened before:(

Ans 23:

Class : Class 10
Incomplete question

Ans 24:

Class : Class 5

Ans 25:

Class : Class 10
incomplete q

Ans 26:

Class : Class 8
Wrong question. I expected more accurate question.

Ans 27:

Class : Class 9

Ans 28:

Class : Class 5
Incomplete que

Ans 29:

Class : Class 7

Ans 30:

Class : Class 6
This is an incomelete question!!!!!!!!!!!!

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
c

Ans 2:

Class : Class 8
c is right because we have to multiply cause we are given times.. 1000x___= 100... so we get 1000/10= 10 so c is right

Ans 3:

Class : Class 7
ans should be C

Ans 4:

Class : Class 10

Ans 5:

Class : Class 6
Ans c only makes sense

Ans 6:

Class : Class 8
The correct answer is (C) because the question asks you by how many times it is DECREASING from LEFT TO RIGHT . If it said increasing, then the answer would be (B)

Ans 7:

Class : Class 9
in synopsis its given that the place value decreases by 10

Ans 8:

Class : Class 6
the answer should be option C

Ans 9:

Class : Class 8
Decreases means division and increases means multiplication.Over here it says decreases and therefore it is division.For example let us take 100.(B) 100/ 1/10 = 100 * 10 = 1000(C)100/10 = 10Therefore,C is correct as 1 moves from left to right.

Ans 10:

Class : Class 5
correct ans. should be C

Ans 11:

Class : Class 7
answer should be Cas 100 /10 is 10

Ans 12:

Class : Class 6
how can it decrease by 1/10. it changes by 1/10 and decreases by 10 times answer should be C

Ans 13:

Class : Class 6
My explaination is when we decrease a number by 1/10 times example 100 / 1/10 = 1000 so it increases by 10. If in place of decrease it was increase then b would be the answer but actual answer is c.

Ans 14:

Class : Class 6
Ans is C, the most sigma

Ans 15:

Class : Class 6
Ans should be (c)

Ans 16:

Class : Class 9
and should be c

Ans 17:

Class : Class 6
answer should be C because it already says the word divide and if we write ans as B then it will become ( eg. 100/1/10 = 1000) hence it should be ( eg. 100/10 = 10) . PLS CORRECT IT SOF !!!!!

Ans 18:

Class : Class 9
THE ANSWER SHOULD BE (B) PLEASE VERIFY SOF!!!!

Ans 19:

Class : Class 6
The correct answer is C as 100/10 is 10, 1000/100 is also 10.

Ans 20:

Class : Class 9
I think answer is B.....as we have to divide the digit by number 10 each time we move from left to right .....and so its value decreases eg 500 is divided by 10 (500*1/10 = 50) to make its place value from hundred to tens

Ans 21:

Class : Class 7
the answer is C.. B is the wrong answer . if we have to move the digits from left to right we should multiply and not divide.. please clarify SOF..

Ans 22:

Class : Class 6
The and should be C

Ans 23:

Class : Class 8
answer should be c not b

Ans 24:

Class : Class 6
The answer is c. It decreases by 1 by 10 when it goes from right to left, not from left to right.

Ans 25:

Class : Class 9
The answer is B cause they are saying step by step from LEFT to RIGHT that means it is increasing but as they have said decreasing the answer is B . eg- 10 increases by 10 when it goes from tens to hundred. So it decreases by this formula - 10 divided by 1/10 ( dividing a whole number by a fraction = whole number X the reciprocal of the fraction) = 10x10 = 100

Ans 26:

Class : Class 8
c

Ans 27:

Class : Class 8
ans. should be [C].

Ans 28:

Class : Class 9
Its C

Ans 29:

Class : Class 7

Ans 30:

Class : Class 8
c

Ans 31:

Class : Class 7
ans should be c

Ans 32:

Class : Class 10
answer should be c

Ans 33:

Class : Class 9
THE ANSWER IS - B

Ans 34:

Class : Class 7
Cccc!

Ans 35:

Class : Class 10

Ans 36:

Class : Class 7
Remember LEFT TO RIGHT

Ans 37:

Class : Class 9
As he is saying times, it should be 10 and not 1/10. So, answer should be C

Ans 38:

Class : Class 7
Answer should be C

Ans 39:

Class : Class 6
the correct answer is [B] because if we take a no. as 10.ok.then i am doing like example see- 10X1/10 so it is =1 so it decreased

Ans 40:

Class : Class 10

Ans 41:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 42:

Class : Class 10

Ans 43:

Class : Class 8

Ans 44:

Class : Class 10
The answer is (c)

Ans 45:

Class : Class 7
decreasing by 1/10 is not possible . the answer should be (c)

Ans 46:

Class : Class 6
Ans is (c).

Ans 47:

Class : Class 8
C

Ans 48:

Class : Class 10
answer is bwhen we move from left to rightexample-1000 to 100how do you get 100 by dividing it by 10 right?i.e 1000/10 = 100answer = 1/10

Ans 49:

Class : Class 7

Ans 50:

Class : Class 8
look at solution please

Ans 51:

Class : Class 10
c

Ans 52:

Class : Class 8
ans should be cccc.

Ans 53:

Class : Class 8
it should be B as it is decreased by not increased if it was increased than it was 10

Ans 54:

Class : Class 8
correct ans. should be C

Ans 55:

Class : Class 7
Answer should be C

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