International Maths Olympiad Forum By SOF Olympiad Trainer - Page 727

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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 8
how is the answer C ?

Ans 2:

Class : Class 9
please xplain this question

Ans 3:

Class : Class 8
Very complicated answer shown

Ans 4:

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

Ans 5:

Class : Class 10

Ans 6:

Class : Class 10

Ans 7:

Class : Class 9
I think the answer should be B

Ans 8:

Class : Class 9
answer is option c

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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
SOF IS THE WORST

Ans 2:

Class : Class 10
incomplete q

Ans 3:

Class : Class 8
incomplete question, no solution

Ans 4:

Class : Class 6
incomplete

Ans 5:

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

Ans 6:

Class : Class 5
Incomplete que

Ans 7:

Class : Class 6
incompete question

Ans 8:

Class : Class 10

Ans 9:

Class : Class 6

Ans 10:

Class : Class 8

Ans 11:

Class : Class 4
incomplete question

Ans 12:

Class : Class 8
I am speechless

Ans 13:

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

Ans 14:

Class : Class 9
Incomplete Question.

Ans 15:

Class : Class 10
question is completed in pdf

Ans 16:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 17:

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

Ans 18:

Class : Class 7
incomplete question

Ans 19:

Class : Class 10

Ans 20:

Class : Class 7

Ans 21:

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

Ans 22:

Class : Class 10
Incomplete question

Ans 23:

Class : Class 8
incomplete question with no solution

Ans 24:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 25:

Class : Class 9
This is an incomelete question!!!!!!!!!!!!

Ans 26:

Class : Class 8

Ans 27:

Class : Class 7

Ans 28:

Class : Class 5

Ans 29:

Class : Class 9

Ans 30:

Class : Class 6
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
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 2:

Class : Class 9
Its C

Ans 3:

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 4:

Class : Class 6
Ans is C, the most sigma

Ans 5:

Class : Class 8
c

Ans 6:

Class : Class 6
c

Ans 7:

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 8:

Class : Class 10
answer should be c

Ans 9:

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

Ans 10:

Class : Class 8
ans should be cccc.

Ans 11:

Class : Class 8

Ans 12:

Class : Class 9
and should be c

Ans 13:

Class : Class 6
Ans is (c).

Ans 14:

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 15:

Class : Class 7
Answer should be C

Ans 16:

Class : Class 10

Ans 17:

Class : Class 10
The answer is (c)

Ans 18:

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

Ans 19:

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

Ans 20:

Class : Class 8
correct ans. should be C

Ans 21:

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 22:

Class : Class 7
ans should be C

Ans 23:

Class : Class 7
Cccc!

Ans 24:

Class : Class 9
decreasing by 1/10 is not possible . the answer should be (c)

Ans 25:

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

Ans 26:

Class : Class 8
answer should be c not b

Ans 27:

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 28:

Class : Class 7

Ans 29:

Class : Class 7
Remember LEFT TO RIGHT

Ans 30:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 31:

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 32:

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

Ans 33:

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 34:

Class : Class 6
Ans c only makes sense

Ans 35:

Class : Class 8
c

Ans 36:

Class : Class 8
C

Ans 37:

Class : Class 10

Ans 38:

Class : Class 6
the answer should be option C

Ans 39:

Class : Class 10

Ans 40:

Class : Class 8
look at solution please

Ans 41:

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

Ans 42:

Class : Class 6
The and should be C

Ans 43:

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 44:

Class : Class 10

Ans 45:

Class : Class 5
correct ans. should be C

Ans 46:

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 47:

Class : Class 6
Ans should be (c)

Ans 48:

Class : Class 7

Ans 49:

Class : Class 9
THE ANSWER IS - B

Ans 50:

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

Ans 51:

Class : Class 7
Answer should be C

Ans 52:

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 53:

Class : Class 7
ans should be c

Ans 54:

Class : Class 10
c

Ans 55:

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)

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 3
Ya B

Ans 2:

Class : Class 5

Ans 3:

Class : Class 2
C

Ans 4:

Class : Class 4
b

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 9
thank you

Ans 7:

Class : Class 4
B

Ans 8:

Class : Class 5
b

Ans 9:

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

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