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What is the remainder when the positive integer n is divided [#permalink]
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10 May 2009, 20:09
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What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer.
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Re: What is the remainder when the positive integer n is divided [#permalink]
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reply2spg wrote: What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer. (1) Let n = 8, remainder 3.....so, 8/2 = remainder = 0 Let n = 16, remainder 1....so 16/2 = remainder = 0 Suff (2) n = can be 10,30,50,70,90,110,130 etc All these numbers are divisible by 2, remainder = 0 Suff D P.S > I hope i'm not missing something



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Re: What is the remainder when the positive integer n is divided [#permalink]
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11 May 2009, 07:42
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I think its B.
From stat 1, n could be 6 or 11. Both numbers give different remainders when divided by 2.Insuff.
From stat 2, n can be 11, 21, 31, etc. In all cases, it gives a remainder of 1 when divided by 2. Suff.



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Re: What is the remainder when the positive integer n is divided [#permalink]
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11 May 2009, 08:12
n is +ive int, rem when n/2?
1)n/5, rem is odd test numbers 13,21,28
13/2 rem=1, 21/2 rem=1, 28/2 rem=0, insuff
2)n/10, rem is odd
test numbers 13, 21, 27
13/2 rem=1, 21/2 rem=1, 27/2 rem =1, suff
B



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Re: What is the remainder when the positive integer n is divided [#permalink]
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reply2spg wrote: What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer. Without testing numbers: First, there are only two remainders possible when you divide n by 2: 0 and 1. The remainder is 0 if n is even, and 1 if n is odd. So the question is really just asking "is n odd?" Remember the quotient/remainder definition. When we divide n by d, we have n = qd + r, where r is the remainder and q the quotient. From S1, n = 5q + r, where r is odd. So n = 5q + odd, and n could be even if q is odd, and n could be odd if q is even. Insufficient. From S2, n = 10q + r where r is odd. So n = even + odd = odd. Sufficient.
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Re: What is the remainder when the positive integer n is divided [#permalink]
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1) n = 5q + odd
^This doesn't tell us whether q is divisible by 2 or not. So this info is insufficient.
2) n = 10q + odd, = 2(5q) + odd
^We can see that the remainder is odd. So this info is sufficient. B



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What is the remainder when the positive integer n is divided [#permalink]
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What is the remainder when the positive integer n is divided by 2?
(1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer



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Re: please explain the answer how the authore arrives to that [#permalink]
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naaga wrote: What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer What is the remainder when the positive integer n is divided by 2? Question basically asks whether n is odd or even: if it's odd then the remainder will be 1 and if it's even then the remainder will be zero. (1) When n is divided by 5, the remainder is an odd integer > n=5q+odd, so n could be odd (1, 3, 11, 13, 21, 23, ...) as well as even (6, 8, 16, 18, ... ). Not sufficient. (2) When n is divided by 10, the remainder is an odd integer > n=10p+odd=even+odd=odd. Sufficient. Answer: B. P. S. naaga please always tag your questions.
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Re: please explain the answer how the authore arrives to that [#permalink]
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25 Feb 2011, 10:15
Answer should be B. If divided by 10 ,and the remainder is odd, then remainder will always be 1 when divided by 2
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Re: please explain the answer how the authore arrives to that [#permalink]
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25 Feb 2011, 10:23
Clear B. 2) tells me precisely that n is odd. Hence reminder is 1 when n is divided by 2.



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Re: please explain the answer how the authore arrives to that [#permalink]
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30 Apr 2011, 17:35
answer is b 1. in suff no will be like 6,8,11,13 2. suff  no will be always odd11,13 15 , 17 so b is the answer
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Re: What is the remainder when the positive integer n is divided [#permalink]
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05 Oct 2011, 11:53
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Ans is B
As per statement one the number can be either odd or even. but when u divide by 10 you will get odd integer only when you divide a odd integer
So Ans is B



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Re: What is the remainder when the positive integer n is divided [#permalink]
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08 Jul 2014, 02:38
Bunuel wrote: naaga wrote: What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer What is the remainder when the positive integer n is divided by 2? Question basically asks whether n is odd or even: if it's odd then the remainder will be 1 and if it's even then the remainder will be zero. (1) When n is divided by 5, the remainder is an odd integer > n=5q+odd, so n could be odd (1, 3, 11, 13, 21, 23, ...) as well as even (6, 8, 16, 18, ... ). Not sufficient. (2) When n is divided by 10, the remainder is an odd integer > n=10p+odd=even+odd=odd. Sufficient. Answer: B. P. S. naaga please always tag your questions.Bunuel, how can the remainder of n/5 be 11 or 6 and so on? Isn't it always between 1 and 4? e.g. 9/ 5 = 1+4 or 23 / 5 = 1+3. What am I getting wrong here?



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What is the remainder when the positive integer n is divided [#permalink]
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08 Jul 2014, 03:34
unceldolan wrote: Bunuel wrote: naaga wrote: What is the remainder when the positive integer n is divided by 2? (1) When n is divided by 5, the remainder is an odd integer. (2) When n is divided by 10, the remainder is an odd integer What is the remainder when the positive integer n is divided by 2? Question basically asks whether n is odd or even: if it's odd then the remainder will be 1 and if it's even then the remainder will be zero. (1) When n is divided by 5, the remainder is an odd integer > n=5q+odd, so n could be odd (1, 3, 11, 13, 21, 23, ...) as well as even (6, 8, 16, 18, ... ). Not sufficient. (2) When n is divided by 10, the remainder is an odd integer > n=10p+odd=even+odd=odd. Sufficient. Answer: B. P. S. naaga please always tag your questions.Bunuel, how can the remainder of n/5 be 11 or 6 and so on? Isn't it always between 1 and 4? e.g. 9/ 5 = 1+4 or 23 / 5 = 1+3. What am I getting wrong here? Those are possible values of n, not the possible values of the remainders upon division n by 5.
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Re: What is the remainder when the positive integer n is divided [#permalink]
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02 Feb 2016, 18:01
1. n can be 3, then the reminder will be 1, or n can be 8, and the remainder is 0. NS 2. n is odd, thus, the remainder when n is divided by 2 will always be 1.



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Re: What is the remainder when the positive integer n is divided [#permalink]
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21 Feb 2017, 15:05
St 1 Insuff, becuase if we divide 10/5 > remainder 0 but 8/5 = 3
St2 Suff  Allodd /10 will give odd Int as remainder (Suff)
Answer B.




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