International Maths Olympiad Forum By SOF Olympiad Trainer - Page 743

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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 10

Ans 4:

Class : Class 9
I think the answer should be B

Ans 5:

Class : Class 9
Very complicated answer shown

Ans 6:

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

Ans 7:

Class : Class 9
please xplain this question

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

Post Your Answer

Subject :IMO    Class : Class 5

Ans 1:

Class : Class 8
I am speechless

Ans 2:

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

Ans 3:

Class : Class 10

Ans 4:

Class : Class 7

Ans 5:

Class : Class 6
incomplete

Ans 6:

Class : Class 9

Ans 7:

Class : Class 6

Ans 8:

Class : Class 8
incomplete question with no solution

Ans 9:

Class : Class 5

Ans 10:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 11:

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

Ans 12:

Class : Class 9
Incomplete Question.

Ans 13:

Class : Class 10
incomplete q

Ans 14:

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

Ans 15:

Class : Class 8

Ans 16:

Class : Class 4
incomplete question

Ans 17:

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

Ans 18:

Class : Class 10
Incomplete question

Ans 19:

Class : Class 8

Ans 20:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 21:

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

Ans 22:

Class : Class 6
incompete question

Ans 23:

Class : Class 6
Incomplete question.

Ans 24:

Class : Class 7
incomplete question

Ans 25:

Class : Class 10
question is completed in pdf

Ans 26:

Class : Class 10

Ans 27:

Class : Class 5
Incomplete que

Ans 28:

Class : Class 7
SOF IS THE WORST

Ans 29:

Class : Class 8
incomplete question, no solution

Ans 30:

Class : Class 7

Post Your Answer

Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 6

Post Your Answer

Subject :IMO    Class : Class 6

Post Your Answer

Subject :IMO    Class : Class 6

Ans 1:

Class : Class 7
ans should be c

Ans 2:

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 3:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 4:

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

Ans 5:

Class : Class 8

Ans 6:

Class : Class 9
THE ANSWER IS - B

Ans 7:

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 8:

Class : Class 7
ans should be C

Ans 9:

Class : Class 9
Its C

Ans 10:

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 11:

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

Ans 12:

Class : Class 10
c

Ans 13:

Class : Class 7
Remember LEFT TO RIGHT

Ans 14:

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 15:

Class : Class 8
answer should be c not b

Ans 16:

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

Ans 17:

Class : Class 8
c

Ans 18:

Class : Class 6
Ans is (c).

Ans 19:

Class : Class 8
c

Ans 20:

Class : Class 10

Ans 21:

Class : Class 5
C

Ans 22:

Class : Class 7
Answer should be C

Ans 23:

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 24:

Class : Class 6
Ans c only makes sense

Ans 25:

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 26:

Class : Class 8
ans should be cccc.

Ans 27:

Class : Class 7
Answer should be C

Ans 28:

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 29:

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

Ans 30:

Class : Class 10

Ans 31:

Class : Class 6
the answer should be option C

Ans 32:

Class : Class 10

Ans 33:

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 34:

Class : Class 6
c

Ans 35:

Class : Class 10

Ans 36:

Class : Class 7
Cccc!

Ans 37:

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

Ans 38:

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 39:

Class : Class 5
correct ans. should be C

Ans 40:

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 41:

Class : Class 8
correct ans. should be C

Ans 42:

Class : Class 10
answer should be c

Ans 43:

Class : Class 8
look at solution please

Ans 44:

Class : Class 6
Ans should be (c)

Ans 45:

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

Ans 46:

Class : Class 9
and should be c

Ans 47:

Class : Class 6
Ans is C, the most sigma

Ans 48:

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

Ans 49:

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

Ans 50:

Class : Class 7

Ans 51:

Class : Class 7

Ans 52:

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 53:

Class : Class 6
The and should be C

Ans 54:

Class : Class 10
The answer is (c)

Ans 55:

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

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 9
thank you

Ans 2:

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

Ans 3:

Class : Class 4
B

Ans 4:

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 5:

Class : Class 3
Ya B

Ans 6:

Class : Class 4
b

Ans 7:

Class : Class 2
C

Ans 8:

Class : Class 5
b

Ans 9:

Class : Class 5

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 3

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