International Maths Olympiad Forum By SOF Olympiad Trainer - Page 687

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
c

Ans 2:

Class : Class 3
the answer is c

Ans 3:

Class : Class 7
how c, has been come

Ans 4:

Class : Class 7
this is right now i have understood

Ans 5:

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

Ans 6:

Class : Class 3

Ans 7:

Class : Class 9
c is the answer

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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 9
answer is option c

Ans 3:

Class : Class 8
how is the answer C ?

Ans 4:

Class : Class 8
I think the answer should be B

Ans 5:

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

Ans 6:

Class : Class 9
please xplain this question

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 3
it is 18 and 8

Ans 3:

Class : Class 6
SHOULD BE 18?

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 9
Incomplete Question.

Ans 3:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 4:

Class : Class 7
SOF IS THE WORST

Ans 5:

Class : Class 6
incompete question

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 4
incomplete question

Ans 9:

Class : Class 10
incomplete q

Ans 10:

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

Ans 11:

Class : Class 10

Ans 12:

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

Ans 13:

Class : Class 10
Incomplete question

Ans 14:

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

Ans 15:

Class : Class 6

Ans 16:

Class : Class 6
Incomplete question.

Ans 17:

Class : Class 7
incomplete question

Ans 18:

Class : Class 5
Incomplete que

Ans 19:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 20:

Class : Class 8
incomplete question, no solution

Ans 21:

Class : Class 8

Ans 22:

Class : Class 7

Ans 23:

Class : Class 7

Ans 24:

Class : Class 9
question is completed in pdf

Ans 25:

Class : Class 6
incomplete

Ans 26:

Class : Class 8

Ans 27:

Class : Class 8
incomplete question with no solution

Ans 28:

Class : Class 8
I am speechless

Ans 29:

Class : Class 10

Ans 30:

Class : Class 9

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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 7
Cccc!

Ans 2:

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

Ans 3:

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 4:

Class : Class 6
Ans c only makes sense

Ans 5:

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

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
answer should be c not b

Ans 8:

Class : Class 10
The answer is (c)

Ans 9:

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

Ans 10:

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 11:

Class : Class 7
c

Ans 12:

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 13:

Class : Class 9
c

Ans 14:

Class : Class 6
Ans should be (c)

Ans 15:

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

Ans 16:

Class : Class 6
The and should be C

Ans 17:

Class : Class 7
Answer should be C

Ans 18:

Class : Class 9
and should be c

Ans 19:

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 20:

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

Ans 21:

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

Ans 22:

Class : Class 8
correct ans. should be C

Ans 23:

Class : Class 7
ans should be c

Ans 24:

Class : Class 10

Ans 25:

Class : Class 10

Ans 26:

Class : Class 7
c

Ans 27:

Class : Class 6
the answer should be option C

Ans 28:

Class : Class 7
Answer should be C

Ans 29:

Class : Class 7
ans should be C

Ans 30:

Class : Class 8

Ans 31:

Class : Class 10

Ans 32:

Class : Class 7
ans should be cccc.

Ans 33:

Class : Class 6
Ans is C, the most sigma

Ans 34:

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 35:

Class : Class 5
correct ans. should be C

Ans 36:

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 37:

Class : Class 7

Ans 38:

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 39:

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 40:

Class : Class 9
Its C

Ans 41:

Class : Class 9
THE ANSWER IS - B

Ans 42:

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 43:

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

Ans 44:

Class : Class 8
C

Ans 45:

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 46:

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 47:

Class : Class 7
Remember LEFT TO RIGHT

Ans 48:

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

Ans 49:

Class : Class 6
Ans is (c).

Ans 50:

Class : Class 7
look at solution please

Ans 51:

Class : Class 10
answer should be c

Ans 52:

Class : Class 10

Ans 53:

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 54:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 55:

Class : Class 6
c

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