International Maths Olympiad Forum By SOF Olympiad Trainer - Page 720

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 3
it is 18 and 8

Ans 2:

Class : Class 3
a

Ans 3:

Class : Class 6
SHOULD BE 18?

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
Incomplete question.

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 8

Ans 5:

Class : Class 10
Incomplete question

Ans 6:

Class : Class 6

Ans 7:

Class : Class 9
Incomplete Question.

Ans 8:

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

Ans 9:

Class : Class 8
incomplete question, no solution

Ans 10:

Class : Class 10

Ans 11:

Class : Class 7
I AGREE WITH YOU GUYS

Ans 12:

Class : Class 5
Incomplete que

Ans 13:

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

Ans 14:

Class : Class 8
incomplete question with no solution

Ans 15:

Class : Class 8
SOF you are the worst olympiad trainer

Ans 16:

Class : Class 4
incomplete question

Ans 17:

Class : Class 10
incomplete q

Ans 18:

Class : Class 7
incomplete question

Ans 19:

Class : Class 7

Ans 20:

Class : Class 8
I am speechless

Ans 21:

Class : Class 8

Ans 22:

Class : Class 10

Ans 23:

Class : Class 5

Ans 24:

Class : Class 7
SOF IS THE WORST

Ans 25:

Class : Class 7

Ans 26:

Class : Class 6
incomplete

Ans 27:

Class : Class 9

Ans 28:

Class : Class 6
incompete question

Ans 29:

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

Ans 30:

Class : Class 10
question is completed in pdf

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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 8
ans should be cccc.

Ans 2:

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

Ans 3:

Class : Class 9
and should be c

Ans 4:

Class : Class 10
The answer is (c)

Ans 5:

Class : Class 8
c

Ans 6:

Class : Class 9
Its C

Ans 7:

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 8:

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

Ans 9:

Class : Class 10
c

Ans 10:

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

Ans 11:

Class : Class 5
correct ans. should be C

Ans 12:

Class : Class 9
THE ANSWER IS - B

Ans 13:

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

Ans 14:

Class : Class 7
Remember LEFT TO RIGHT

Ans 15:

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 16:

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 17:

Class : Class 8
answer should be c not b

Ans 18:

Class : Class 6
c

Ans 19:

Class : Class 7
Answer should be C

Ans 20:

Class : Class 6
Ans is C, the most sigma

Ans 21:

Class : Class 7
Answer should be C

Ans 22:

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 23:

Class : Class 7

Ans 24:

Class : Class 10

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 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 27:

Class : Class 7
Cccc!

Ans 28:

Class : Class 10
answer should be c

Ans 29:

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 30:

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

Ans 31:

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 32:

Class : Class 6
Ans should be (c)

Ans 33:

Class : Class 6
The and should be C

Ans 34:

Class : Class 6
Ans is (c).

Ans 35:

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

Ans 36:

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 37:

Class : Class 8
correct ans. should be C

Ans 38:

Class : Class 10

Ans 39:

Class : Class 8
c

Ans 40:

Class : Class 8

Ans 41:

Class : Class 8
C

Ans 42:

Class : Class 10

Ans 43:

Class : Class 8
look at solution please

Ans 44:

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 45:

Class : Class 7
ans should be C

Ans 46:

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

Ans 47:

Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 48:

Class : Class 7
ans should be c

Ans 49:

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 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 6
Ans c only makes sense

Ans 52:

Class : Class 7

Ans 53:

Class : Class 10

Ans 54:

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 55:

Class : Class 6
the answer should be option C

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
b

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 4
B

Ans 5:

Class : Class 2
C

Ans 6:

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 7:

Class : Class 9
thank you

Ans 8:

Class : Class 5

Ans 9:

Class : Class 3
Ya B

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 6
If the movie is for 2 hours it can be shown 6 times between 12 noon and 12 midnight which is 12 hours. 12/2=6. The answer is B.

Ans 2:

Class : Class 4
Ok

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