Is the integer X between 20 and 26 inclusive? (1) x is multiple of 9

Question

Is the integer X between 20 and 26 inclusive?

(1) x is multiple of 9
(2) x = 18

VyshakhR1995 · Answer

Statement states multiple Of 9-----9,18,27----Hence sufficient

Statement 2 directly gives the value ----Sufficient

Hence D

Russ19 · Answer

chetan2u ,  IanStewart  Could you please solve the problem above? Thanks in advance!

chetan2u · Answer

So the question becomes -- Is  20\leq{x}\leq{26} ?

(1) x is multiple of 9
So x can be 0, 9, 18, 27, ....
We can see that there are no multiples of 9 in the given range. Thus our answer will be a definite NO, x does not lie between 20 and 26 both inclusive.
Sufficient

(2) x = 18
Clearly x does not lie between 20 and 26 both inclusive.
Sufficient

D

BrentGMATPrepNow · Answer

Target question :    Is the integer X between 20 and 26 inclusive?

Statement 1 : x is multiple of 9  
Some possible values of x include: 9, 18, 27, 36, 45, 54, ....
Notice that NONE of the possible x-values are between 20 and 26 inclusive.
So, the answer to the target question is  NO, x is NOT between 20 and 26 inclusive 
Since we can answer the  target question  with certainty, statement 1 is SUFFICIENT

Statement 2 : x = 18 
if x = 18, then the answer to the target question is  NO, x is NOT between 20 and 26 inclusive 
Since we can answer the  target question  with certainty, statement 2 is SUFFICIENT

Answer: D

ASIDE: I believe you may have made the common mistake of confusing the answer to the target question with the answer to the sufficiency question. 
I cover that common error in the video below (starting at 3:16)

Cheers,
Brent
 https://www.youtube.com/watch?v=iACq36scVYQ

Kinshook · Answer

Asked: Is the integer X between 20 and 26 inclusive?

(1) x is multiple of 9
x = {9,18,27,...}
Since none of the values in between 20 and 26 inclusive
Answer = NO
SUFFICIENT

(2) x = 18
Since 18 is NOT in between 20 and 26 inclusive
Answer = NO
SUFFICIENT

IMO D

bumpbot · Answer

Automated notice from GMAT Club BumpBot: 

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

 This post was generated automatically.

Is the integer X between 20 and 26 inclusive? (1) x is multiple of 9

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Data Sufficiency (DS) Questions

Is the integer X between 20 and 26 inclusive? (1) x is multiple of 9

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards