# User Forum

Subject :IMO    Class : Class 5

The natural number which is a multiple of every number is ______.

A 0
B 1
C There is no such number
D None of these

answer must be c

## Ans 1:

Class : Class 7
zero is not a natural number, so A is incorrect. The correct answer must be D

Class : Class 5
REeeeeeeeeeeee

## Ans 3:

Class : Class 6
0 is not a natural number

Class : Class 5
stupid it is C

## Ans 5:

Class : Class 5
None of the above- option is the correct answer. I think we should report it as error instead of discussing on forum so much. See SOF's answer is wrong so there they shown no solution. They themselves know their mistake but not correct it. There are many mistakes such as this. I think next time SOF improves.

## Ans 6:

Class : Class 5
The answer would be c because 1 is factor of every number not multiplie if it is a whole number then it will be zero but if it is a natural number then the answer of the final question would be c sir.So hence option c will be the correct answer of the question.

## Ans 7:

Class : Class 6
Answer should be corrected, 1 is factor of any number, but not multiple of every number. Correct answer is C.

Class : Class 8
wrong ans shown

## Ans 9:

Class : Class 6
how can 1 be a multiple of a number accept 1 itself . I suggest the human to write all tables 1000 times

## Ans 10:

Class : Class 6
Answer is D. 1 is not a multiple but factor of all natural numbers.

## Ans 11:

Class : Class 5
The answer is C. One is not a multiple of every number

Class : Class 9
The answer is C.

## Ans 13:

Class : Class 6
This is impossible how can a multiple of every number be 1!!!!

## Ans 14:

Class : Class 7
C is the answer. I donÃ¢Â€Â™t understand how 1 can come.

Class : Class 6

## Ans 16:

Class : Class 8
The answer is C because 1 is a natural number but not a multiple of every number and 0 is a multiple of every number but it is not a natural number

## Ans 17:

Class : Class 7
The correct answer is C

## Ans 18:

Class : Class 5
The question is wrong....1 can be factor of all natural numbers not the multiple

## Ans 19:

Class : Class 9
the answer should be c because 1 is a factor of every number and the smallest multiple of any number is the number itself

Class : Class 6
0 is the answer

## Ans 21:

Class : Class 4
Kavya Vikas Gatkal from Podar International School JalnaThe answer is c because 1 is a factor of every number not a multiple

## Ans 22:

Class : Class 9
The answer is definitely c "There is no such number" as 0 is not a natural number but a whole number. Secondly though 1 is a natural number it is only a multiple of itself and not a multiple of every number.

## Ans 23:

Class : Class 6
Agreed , answer is C. 1 is not a multiple of every number, it is a factor of every number. There is a error in the answer system.

## Ans 24:

Class : Class 5
the question is the wrongthe correct option is cand the smallest multiple of every number is the number it itself

## Ans 25:

Class : Class 5
it should be c as 0 is a whole number while 1 is a natural number but it is a factor of every number not a multiple.

## Ans 26:

Class : Class 8
THE ANSWER IS WRONG IF THE ANSWER IS CORRECT ,THEN THE QUESTION MUST BE -THE WHOLE NUMBER THAT IS THE MULTIPLE OF EVERY NUMBER IS ___.

Class : Class 5
c is the ans.

Class : Class 5
Maybe c

## Ans 29:

Class : Class 6
it should be c as their is no number that is the multiple of every number

## Ans 30:

Class : Class 2
The corretct answer is C because there is no such number which comes in all the tables. Multiples are the products of numbers. Then how is it possible that SOF website is showing the answer is 1

## Ans 31:

Class : Class 4
The answer should be C. If it was a whole number, then it would have been 0. The question seems to be framed wrongly. The question should have been, " The natural number which is a factor of every number is 1". The answer is wrong.

## Ans 32:

Class : Class 10
one is not a multiple of every number , but every number is a multiple of one, . zero is not a multiple of every number . answer is definitely C

## Ans 33:

Class : Class 8
0 is the only answer

Class : Class 5
c

Class : Class 8
it may be c or d

## Ans 36:

Class : Class 6
Yeah it is c) OMG there are so many comments for this question!!

## Ans 37:

Class : Class 6
it is 0 its the answer 0 is the multiple of every number see 1 multiplied by 0 is 0 then 1 multiplied by 1 is 1 so 0 comes before one and it comes in every numbers table but we dont list

## Ans 38:

Class : Class 7
the correct answer is c

Class : Class 6
c

## Ans 40:

Class : Class 8
MY FIRST COMMENT WAS WRONG ... I WANTED TO WRITE -THE WHOLE NUMBER THAT IS THE FACTOR OF EVERY NUMBER IS _______.

## Ans 41:

Class : Class 5
It should be d . Please tell us master admin

## Ans 42:

Class : Class 5
0 is the answer but it is showing 1 as answer. Problem!

Class : Class 5
I mean ans is c

## Ans 44:

Class : Class 5
MASTER ANSWER !!!!!!!!!!!!! ANS IS C.......... .

## Ans 45:

Class : Class 6
It should be c. There is no such number. And 1 is factor not multiple!!!

## Ans 46:

Class : Class 5
definitely the answer is c

## Ans 47:

Class : Class 9
How is the answer "B".IF THE QUESTION WAS "a number which is a factor of every number, then the answer is b because all numbers can be multiplied by one .but in this question the correct answer is c

## Ans 48:

Class : Class 6
Hi guys, according to me, the answer should be zero which is option 'A' because when you multiply any number with zero, the answer will always be zero. Hence, we can say that zero is a multiple of every number.

## Ans 49:

Class : Class 6
1 is a factor of every number not a multiple . there is no such number as the smallest multiple of a number is the number itself

## Ans 50:

Class : Class 7
Answer is C . If 1 has to be the answer , the question should be " The natural number which is a factor of every number is "

## Ans 51:

Class : Class 3
1 is a factor of all natural numbers .It is not multiple of all numbers

## Ans 52:

Class : Class 5
The answer should be A or B since if the answer A, that is 0, it can be the answer as any number multiplied by 0 is equal to 0. But, if the answer is B, that is 1, it can be the answer if the question has been framed wrongly, that is, if the question would have been "What is the common factor of all the numbers" since all numbers are divisible by 1. But how could the question possibly go so horribly wrong?

## Ans 53:

Class : Class 7
CORRECT ANSWER IS D BECAUSE THE BECAUSE THE SMALLEST MULTIPLE OF A NUMBER IS THE NUMBER ITSELF.

Class : Class 3

## Ans 55:

Class : Class 2
Whoever wrote a or b is foolish. C is the answer.

## Ans 56:

Class : Class 4
The correct answer is 'c' because there is no such number that is a multiple of every number and 1 is the factor of every number and not the multiple .

## Ans 57:

Class : Class 8
you guys are right

## Ans 58:

Class : Class 5
the ans is c because 1 is a factor of every no. not a multiple.the answer would be 0 if they asked for a whole no.

Class : Class 7
I agree

Class : Class 6

## Ans 61:

Class : Class 4
The answer should be C

## Ans 62:

Class : Class 7
The answer is a because 0 is a natural number and is a multiple of every number. for eg- 19*0

## Ans 63:

Class : Class 10
in fact C should be the correct answer as there can not be any such number. By taking D as the correct answer we are ,at the same time, denying the statement given at C.

Class : Class 6
The answer is C.

## Ans 65:

Class : Class 6
ccccccccccccccccccccccccccccccccccccccc

Class : Class 5

## Ans 67:

Class : Class 5
The answer will not be 1 as 1 is a factor of every number, not a multiple. The multiple of every number is infinite, not the 2nd Natural number.

## Ans 68:

Class : Class 5
answer is c as 0 is not a natural number and 1 is a factor of every number,not multiple

## Ans 69:

Class : Class 7
the answer should be c. 1 is a natural number but it is a factor of every number not a multiple. and zero is a whole no. so it should be whole no. which is a multiple of every no.

## Ans 70:

Class : Class 8
Answer will be 0 because 2*0=0,5653453*0=0,4765868756733465358678757646535436536854786*0=0

## Ans 71:

Class : Class 7
The correct answer is C

Class : Class 5
nope

Class : Class 8

Class : Class 5

## Ans 75:

Class : Class 6
There is no such number.

## Ans 76:

Class : Class 6
the correct answer is C

## Ans 77:

Class : Class 1
Guys I am just clearing a doubt I am not sure though. The Ans should be D. Because the natural number which is the multiple of every number is the number itself. Like:1x1=1 2x2=2. Please tell me if I am wrong and make me understand. Thank u

## Ans 78:

Class : Class 9
the answer is c because 0 is a natural number and 1 is the only multiple of itself

## Ans 79:

Class : Class 6
THERE IS NO SUCH NUMBER. THE SMALLEST MULTIPLE OF A NUMBER IS THE NUMBER IT SELF.

## Ans 80:

Class : Class 7
The answer is C because 1 is the factor of every number, not the multiple. And 0 is the multiple of every number but it is not a natural number

## Ans 81:

Class : Class 5
The correct answer is 'C' as 0 is the multiple of every number and it is not a natural number. So, the answer is ' There is no such number '

## Ans 82:

Class : Class 6
the ans: is c not b

Class : Class 5
And.will C

Class : Class 6
C

## Ans 85:

Class : Class 8
the answer can't be B as every whole number is the multiple of 1 but 1 is not the multiple of any number.

## Ans 86:

Class : Class 8
Either the question should be ''The natural number is a factor of every number is ________________.'' or the solution that SOF Olympiad Trainer has given the wrong output. The answer should be C. Please change the output SOF Olympiad Trainer.

## Ans 87:

Class : Class 1
(C) (C) (C) (C) (C) IS CORRECT

## Ans 88:

Class : Class 6
C is the correct answer

Class : Class 9
nope!

## Ans 90:

Class : Class 6
Is 0 a natural number? Well 1 can never be the MULTIPLE of every number. 1 is the multiple of only itself.

## Ans 91:

Class : Class 5
The correct answer is C. There is no such number.

Class : Class 2
the answer is c

## Ans 93:

Class : Class 10
the smallest multiple of a number is itself

Class : Class 6
the answer is c

Class : Class 8

## Ans 96:

Class : Class 8
The question is wrong. It should be: The natural number which is a factor of every number.

## Ans 97:

Class : Class 5
it must be c as 1 is the factor of every number not multiple!

## Ans 98:

Class : Class 5
The ans is D because the number that is the multiple of every number is the number itself. Ex- 6 x 1 = 6

Class : Class 10
0 is the answer

## Ans 100:

Class : Class 5
This SOF is bad and mad

## Ans 101:

Class : Class 7
i think it should be c

## Ans 102:

Class : Class 6
Correct answer should be C. 1 is a natural number but it's not multiple of every number, rather it's factor of every number.

## Ans 103:

Class : Class 4
1X0 IS 0.2XO 03X0 0easy peasy.

Class : Class 10
nope

Class : Class 5
sure it is C

## Ans 106:

Class : Class 6
1 is the factor of every number not a multiple.The answer should be (A)

Class : Class 5
0 is the answer

Class : Class 6

## Ans 109:

Class : Class 8
Anwer is C. 1 is a factor of every number and not the multiple

## Ans 110:

Class : Class 3
The answer is C as there is no such number that is a multiple of every number. If it were a factor then it would have been correct

## Ans 111:

Class : Class 5
The correct answer is C

## Ans 112:

Class : Class 6
the answer is obviously C because 0 is the only number which is it but it is a whole number

## Ans 113:

Class : Class 8
yes the answer is wrong on the SOF portal . It is showing answer B but the correct answer is C

Class : Class 3
The answer is C