If 20/X is an odd integer, which of the following could X equal?

Question

A. 2/3
B. 1/3
C. 2/5
D. 2/7
E. 4/3

Lipun · Answer

All other options yield an even value, only 20*3/4 = 15, which is odd

Ans: E

yashikaaggarwal · Answer

20/x is an odd integer

Putting values of X one by one.

A. 2/3 = 20/(2/3) = 60/2 = 30 (even)

B. 1/3 = 20/(1/3) = 60/1 = 60 (even)

C. 2/5 = 20/(2/5) = 100/2 = 50 (even)

D. 2/7 = 20/(2/7) = 140/2 = 70 (even)

E. 4/3 = 20/(4/3) = 60/4 = 15 (odd)

Answer is E

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nkme2007 · Answer

Substituting each option in 20/X

A. 2/3 = 20/(2/3) = 30  not odd 
B. 1/3= 20/(1/3) = 60  not odd 
C. 2/5 = 20/(2/5) = 50  not odd 
D. 2/7 = 20/(2/7) = 70  not odd 
E. 4/3 = = 20/(4/3) = 30  odd

Hence,  OA: E

Sr1994 · Answer

Going through options,

A.  \frac{2}{3}  =  \frac{20*3}{2}  = 30 => Even
B.  \frac{1}{3}  =  \frac{20*3}{1}  = 60 => Even
C.  \frac{2}{5}  =  \frac{20*5}{2}  = 50 => Even
D.  \frac{2}{7}  =  \frac{20*7}{2}  = 70 => Even
E.  \frac{4}{3}  =  \frac{20*3}{4}  = 15 => Odd

Answer E

ManifestDreamMBA · Answer

20 = 4*5. To make it odd, we need to divide by 4 to make it odd. Only E fits (division by 4/3 is actually division by 4 and multiplication by 3, since 3 is odd, we are good)

If 20/X is an odd integer, which of the following could X equal?

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GMAT Problem Solving (PS) Questions

If 20/X is an odd integer, which of the following could X equal?

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