Last visit was: 27 Apr 2026, 23:56 It is currently 27 Apr 2026, 23:56
Home
Messages
Tests
Schools
Events
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
   1   2 
655-705 (Hard)|   Exponents|   Fractions and Ratios|                              
User avatar
BelisariusTirto
User avatar
Joined: 03 Oct 2024
Last visit: 15 Apr 2025
Posts: 33
Own Kudos:
4
Given Kudos: 64
Posts: 33
Kudos: 4
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonze 17 Dec 2024, 07:23
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi Bunuel,

for my own clarity I was hoping you could clear this up for me. When we multiply 1/(2^3*5^7) by 2^4 / 2^4, the other side (d) isn't multiplied per se because 2^4 / 2^4 = 1, am I correct on this?

Not sure why my mind went there.

Thanks
Bunuel
Walkabout
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonzero digits will d have?

(A) One
(B) Two
(C) Three
(D) Seven
(E) Ten

Given: \(d=\frac{1}{2^3*5^7}\).

Multiply by \(\frac{2^4}{2^4}\) --> \(d=\frac{2^4}{(2^3*5^7)*2^4}=\frac{2^4}{2^7*5^7}=\frac{2^4}{10^7}=\frac{16}{10^7}=0.0000016\). Hence \(d\) will have two non-zero digits, 16, when expressed as a decimal.

Answer: B.
Show more
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 27 Apr 2026
Posts: 109,948
Own Kudos:
811,645
 [1]
Given Kudos: 105,925
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,948
Kudos: 811,645
 [1]
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonze 17 Dec 2024, 07:32
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
BelisariusTirto
Hi Bunuel,

for my own clarity I was hoping you could clear this up for me. When we multiply 1/(2^3*5^7) by 2^4 / 2^4, the other side (d) isn't multiplied per se because 2^4 / 2^4 = 1, am I correct on this?

Not sure why my mind went there.

Thanks
Bunuel
Walkabout
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonzero digits will d have?

(A) One
(B) Two
(C) Three
(D) Seven
(E) Ten

Given: \(d=\frac{1}{2^3*5^7}\).

Multiply by \(\frac{2^4}{2^4}\) --> \(d=\frac{2^4}{(2^3*5^7)*2^4}=\frac{2^4}{2^7*5^7}=\frac{2^4}{10^7}=\frac{16}{10^7}=0.0000016\). Hence \(d\) will have two non-zero digits, 16, when expressed as a decimal.

Answer: B.
Show more

Yes. Essentially we multiply by 1 expressed as 2^4/2^4
User avatar
ablatt4
User avatar
Joined: 18 Dec 2024
Last visit: 24 Sep 2025
Posts: 87
Own Kudos:
3
Given Kudos: 89
Location: United States (FL)
Concentration: Finance
Schools: Duke '26 Darden '26 Johnson '26 UNC '26
Schools: Duke '26 Darden '26 Johnson '26 UNC '26
Posts: 87
Kudos: 3
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonze 21 Aug 2025, 10:11
Kudos
Add Kudos
Bookmarks
Bookmark this Post
In order to solve this problem it is important to remember 2*5=10 and as long as they are to the same power we can make the denominator in the questions a power of 10.

we should multiply numerator and denominator by 2^4 in order to make the denominator 10^7 and the numerator 2^4

From here we can solve that this is 16*10^-7 or 0.00000016
2 is correct(B)

Walkabout
If \(d=\frac{1}{2^3*5^7}\) is expressed as a terminating decimal, how many nonzero digits will d have?

(A) One
(B) Two
(C) Three
(D) Seven
(E) Ten
Show more
User avatar
ablatt4
User avatar
Joined: 18 Dec 2024
Last visit: 24 Sep 2025
Posts: 87
Own Kudos:
3
Given Kudos: 89
Location: United States (FL)
Concentration: Finance
Schools: Duke '26 Darden '26 Johnson '26 UNC '26
Schools: Duke '26 Darden '26 Johnson '26 UNC '26
Posts: 87
Kudos: 3
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonze 22 Aug 2025, 10:38
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Easiest way to solve is to multiply the fraction by 2^4/2^4 and get 2^4 / 10^7 = 16*10^-7 = .0000016
Walkabout
If \(d=\frac{1}{2^3*5^7}\) is expressed as a terminating decimal, how many nonzero digits will d have?

(A) One
(B) Two
(C) Three
(D) Seven
(E) Ten
Show more
User avatar
totaltestprepNick
User avatar
Joined: 25 Aug 2014
Last visit: 27 Apr 2026
Posts: 469
Own Kudos:
4
Given Kudos: 2
GMAT 1: 750 Q49 V42
GMAT 1: 750 Q49 V42
Posts: 469
Kudos: 4
If d=1/(2^3*5^7) is expressed as a terminating decimal, how many nonze 24 Feb 2026, 13:24
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Walkabout
If \(d=\frac{1}{2^3*5^7}\) is expressed as a terminating decimal, how many nonzero digits will d have?

(A) One
(B) Two
(C) Three
(D) Seven
(E) Ten
Show more

Show Spoiler
B




Nick Slavkovich, GMAT/GRE tutor with 20+ years of experience

[email protected]
   1   2 
Moderators:
Bunuel
Math Expert
109948 posts
Krunaal
Tuck School Moderator
852 posts