GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Units digit of the product of the first 7 positive integers
[#permalink]
27 Jan 2021, 05:14
27 Jan 2021, 05:14
Expert Reply
1
Bookmarks
00:00
Question Stats:
94% (00:37) correct
5% (01:02) wrong based on 19 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
Units digit of the product of the first 7 positive integers |
Units digit of the product 8 to 14, inclusive |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Re: Units digit of the product of the first 7 positive integers
[#permalink]
27 Jan 2021, 08:25
27 Jan 2021, 08:25
3
1
Bookmarks
Qt A
product of first 7 positive integers.
It includes 1-7. Now it contains 2 & 5 hence the unit digit will be 0
Qt B
product of nos between 8-14
It includes 10 so unit digit will be 0
Answer C
product of first 7 positive integers.
It includes 1-7. Now it contains 2 & 5 hence the unit digit will be 0
Qt B
product of nos between 8-14
It includes 10 so unit digit will be 0
Answer C
Senior Manager
Joined: 23 Jan 2021
Posts: 294
Given Kudos: 81
Concentration: , International Business
Re: Units digit of the product of the first 7 positive integers
[#permalink]
29 May 2021, 18:29
29 May 2021, 18:29
rx10 wrote:
Qt A
product of first 7 positive integers.
It includes 1-7. Now it contains 2 & 5 hence the unit digit will be 0
Qt B
product of nos between 8-14
It includes 10 so unit digit will be 0
Answer C
product of first 7 positive integers.
It includes 1-7. Now it contains 2 & 5 hence the unit digit will be 0
Qt B
product of nos between 8-14
It includes 10 so unit digit will be 0
Answer C
Good solution, Indeed. I did with another approach, took me long time and still got answer wrong
