International Maths Olympiad Forum By SOF Olympiad Trainer - Page 692

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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 9
answer is option c

Ans 2:

Class : Class 8
I think the answer should be B

Ans 3:

Class : Class 8
how is the answer C ?

Ans 4:

Class : Class 9
please xplain this question

Ans 5:

Class : Class 10

Ans 6:

Class : Class 10

Ans 7:

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

Ans 8:

Class : Class 8
Very complicated answer shown

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 6
SHOULD BE 18?

Ans 2:

Class : Class 3
a

Ans 3:

Class : Class 3
it is 18 and 8

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Subject :IMO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 10

Ans 3:

Class : Class 9

Ans 4:

Class : Class 7

Ans 5:

Class : Class 7
incomplete question

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
I am speechless

Ans 8:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 9:

Class : Class 6
incompete question

Ans 10:

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

Ans 11:

Class : Class 6

Ans 12:

Class : Class 8
incomplete question with no solution

Ans 13:

Class : Class 10
Incomplete question

Ans 14:

Class : Class 10
incomplete q

Ans 15:

Class : Class 7
SOF IS THE WORST

Ans 16:

Class : Class 8

Ans 17:

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

Ans 18:

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

Ans 19:

Class : Class 6
incomplete

Ans 20:

Class : Class 10
question is completed in pdf

Ans 21:

Class : Class 5
Incomplete que

Ans 22:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 23:

Class : Class 8

Ans 24:

Class : Class 5

Ans 25:

Class : Class 8
incomplete question, no solution

Ans 26:

Class : Class 6
Incomplete question.

Ans 27:

Class : Class 4
incomplete question

Ans 28:

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

Ans 29:

Class : Class 10

Ans 30:

Class : Class 9
Incomplete 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
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 2:

Class : Class 8
look at solution please

Ans 3:

Class : Class 7
ans should be c

Ans 4:

Class : Class 8

Ans 5:

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 6:

Class : Class 10

Ans 7:

Class : Class 7

Ans 8:

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

Ans 9:

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 10:

Class : Class 10
c

Ans 11:

Class : Class 10

Ans 12:

Class : Class 8
answer should be c not b

Ans 13:

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

Ans 14:

Class : Class 10
answer should be c

Ans 15:

Class : Class 6
Ans c only makes sense

Ans 16:

Class : Class 6
the answer should be option C

Ans 17:

Class : Class 9
THE ANSWER IS - B

Ans 18:

Class : Class 6
c

Ans 19:

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 20:

Class : Class 6
Ans is C, the most sigma

Ans 21:

Class : Class 8
correct ans. should be C

Ans 22:

Class : Class 6
Ans should be (c)

Ans 23:

Class : Class 7
ans should be cccc.

Ans 24:

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 25:

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 26:

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

Ans 27:

Class : Class 9
and should be c

Ans 28:

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 29:

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 30:

Class : Class 6
The and should be C

Ans 31:

Class : Class 10
The answer is (c)

Ans 32:

Class : Class 8
C

Ans 33:

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 34:

Class : Class 7
Answer should be C

Ans 35:

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 36:

Class : Class 9
Its C

Ans 37:

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 38:

Class : Class 7
ans should be C

Ans 39:

Class : Class 7
Cccc!

Ans 40:

Class : Class 10

Ans 41:

Class : Class 5
correct ans. should be C

Ans 42:

Class : Class 8
c

Ans 43:

Class : Class 10

Ans 44:

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

Ans 45:

Class : Class 7

Ans 46:

Class : Class 7
Remember LEFT TO RIGHT

Ans 47:

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 48:

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

Ans 49:

Class : Class 6
Ans is (c).

Ans 50:

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 51:

Class : Class 7
Answer should be C

Ans 52:

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

Ans 53:

Class : Class 7
c

Ans 54:

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

Ans 55:

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

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 9
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 2:

Class : Class 7
hey , it is 90 tenths cause tenths means at the tenths place only . But if if there is another no. like 90 tenths we should multiply . But if you choose hundredth tenths it it will become in thousands value.

Ans 3:

Class : Class 2
C

Ans 4:

Class : Class 9
thank you

Ans 5:

Class : Class 3
Ya B

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5
b

Ans 8:

Class : Class 4
B

Ans 9:

Class : Class 4
b

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