International Maths Olympiad Forum By SOF Olympiad Trainer - Page 631

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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 8
how is the answer C ?

Ans 3:

Class : Class 6
I think the answer should be B

Ans 4:

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

Ans 5:

Class : Class 8
please xplain this question

Ans 6:

Class : Class 9
answer is option c

Ans 7:

Class : Class 10

Ans 8:

Class : Class 7
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 7

Ans 2:

Class : Class 6
incomplete

Ans 3:

Class : Class 8
incomplete question, no solution

Ans 4:

Class : Class 7
incomplete question

Ans 5:

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

Ans 6:

Class : Class 9
Incomplete Question.

Ans 7:

Class : Class 9

Ans 8:

Class : Class 7
SOF IS THE WORST

Ans 9:

Class : Class 8

Ans 10:

Class : Class 8
I am speechless

Ans 11:

Class : Class 6

Ans 12:

Class : Class 10

Ans 13:

Class : Class 4
incomplete question

Ans 14:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

Class : Class 10
incomplete q

Ans 19:

Class : Class 5
Incomplete que

Ans 20:

Class : Class 6
Incomplete question.

Ans 21:

Class : Class 7

Ans 22:

Class : Class 8
incomplete question with no solution

Ans 23:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 24:

Class : Class 8

Ans 25:

Class : Class 9
question is completed in pdf

Ans 26:

Class : Class 5

Ans 27:

Class : Class 9

Ans 28:

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

Ans 29:

Class : Class 6
incompete question

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

Ans 2:

Class : Class 10
answer should be c

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
c

Ans 5:

Class : Class 7
ans should be c

Ans 6:

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 7:

Class : Class 6
Ans c only makes sense

Ans 8:

Class : Class 3
Remember LEFT TO RIGHT

Ans 9:

Class : Class 8
Answer should be C

Ans 10:

Class : Class 10

Ans 11:

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 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 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 14:

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 15:

Class : Class 8
answer should be c not b

Ans 16:

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

Ans 17:

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

Ans 18:

Class : Class 6
Cccc!

Ans 19:

Class : Class 10

Ans 20:

Class : Class 8

Ans 21:

Class : Class 7
Answer should be C

Ans 22:

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 23:

Class : Class 6
ans should be cccc.

Ans 24:

Class : Class 6
c

Ans 25:

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

Ans 26:

Class : Class 6
Ans should be (c)

Ans 27:

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 28:

Class : Class 8
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 29:

Class : Class 10
The answer is (c)

Ans 30:

Class : Class 6
Ans is (c).

Ans 31:

Class : Class 8
correct ans. should be C

Ans 32:

Class : Class 7
look at solution please

Ans 33:

Class : Class 7
C

Ans 34:

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

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 6
the answer should be option C

Ans 37:

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

Ans 38:

Class : Class 6
The and should be C

Ans 39:

Class : Class 6
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 40:

Class : Class 7
c

Ans 41:

Class : Class 8

Ans 42:

Class : Class 8
in synopsis its given that the place value decreases by 10

Ans 43:

Class : Class 5
correct ans. should be C

Ans 44:

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

Ans 45:

Class : Class 7
c

Ans 46:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 47:

Class : Class 7
ans should be C

Ans 48:

Class : Class 8
Its C

Ans 49:

Class : Class 8
THE ANSWER IS - B

Ans 50:

Class : Class 9
and should be c

Ans 51:

Class : Class 8
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 52:

Class : Class 10

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
b

Ans 2:

Class : Class 3
Ya B

Ans 3:

Class : Class 4
b

Ans 4:

Class : Class 5

Ans 5:

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 6:

Class : Class 8
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 7:

Class : Class 2
C

Ans 8:

Class : Class 8
thank you

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