GMAT Prep

This topic has expert replies
Source: — Data Sufficiency |

Junior | Next Rank: 30 Posts
Posts: 17
Joined: Sun Sep 14, 2008 1:19 pm
Thanked: 4 times

by alescau » Mon Sep 15, 2008 11:22 am
I think it is A.

p=8x+5=4(2x)+4+1=4(2x+1)+1
remainder when p is divided by 4 is 1.
II does not tell us anything.

User avatar
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Sun Sep 14, 2008 6:51 am
Location: Netherlands
Thanked: 10 times
GMAT Score:680

by tendays2go » Mon Sep 15, 2008 11:51 am
it is D

for first stmt has been explained by alescau already.

for the second stmt, pick up values for the two positive integers.
Note that P is an odd integer so we have to choose the integers such that
one is odd and other is even
thus, odd^2 + even^2 = odd

let's take 1 &2 => P = 5, and remainder is 1
for 6 and 9 => P = 117 and here remainder is 1
for 4 and 13 => P = 185 thus, remainder =1

hence, both are sufficient

Master | Next Rank: 500 Posts
Posts: 496
Joined: Sun May 04, 2008 11:01 pm
Location: mumbai
Thanked: 7 times
GMAT Score:640

by stubbornp » Thu Sep 18, 2008 10:16 pm
A....


for stmt 1,5,13,21,... are the numbers
which gives same remainder 1 when divided by 4....

in case of b

3=1^2+2^2

5=2^2+1^2....

more than one value with stmt 2

thats y.....i suggest A...

Legendary Member
Posts: 891
Joined: Sat Aug 16, 2008 4:21 am
Thanked: 27 times
Followed by:1 members
GMAT Score:660(

by 4meonly » Thu Sep 18, 2008 11:19 pm
tendays2go wrote:
let's take 1 &2 => P = 5, and remainder is 1
for 6 and 9 => P = 117 and here remainder is 1
for 4 and 13 => P = 185 thus, remainder =1
let's take 3^2+9^2=90, R=2
INSUFF


As alescau posted p=8x+5=4(2x)+4+1=4(2x+1)+1
remainder when p is divided by 4 is 1.
I agree with A

Master | Next Rank: 500 Posts
Posts: 377
Joined: Wed Sep 03, 2008 9:30 am
Thanked: 15 times
Followed by:2 members

by schumi_gmat » Fri Sep 19, 2008 12:59 pm
Please note P is positive odd integer.

So 3^2+9^2=90 is not possible.

Ans D