BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

If a number p is prime, and 2p+1 = q, where q is also prime, then the decimal expansion of 1/q will produce a decimal

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 7187
Joined: Thu Sep 07, 2017 4:43 pm
Followed by:23 members

If a number p is prime, and 2p+1 = q, where q is also prime, then the decimal expansion of 1/q will produce a decimal

by BTGmoderatorDC » Fri Sep 18, 2020 5:10 pm

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

If a number p is prime, and 2p+1 = q, where q is also prime, then the decimal expansion of 1/q will produce a decimal with q-1 digits. If this method produces a decimal with 166 digits, what is the units digit of the product of p and q?

A. 1
B. 3
C. 5
D. 7
E. 9



OA E

Source: Veritas Prep
Top
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 138
Joined: Sat May 05, 2012 7:03 pm
Thanked: 1 times

Re: If a number p is prime, and 2p+1 = q, where q is also prime, then the decimal expansion of 1/q will produce a decima

by gmatter2012 » Sat Sep 19, 2020 9:00 pm
BTGmoderatorDC wrote: ↑
Fri Sep 18, 2020 5:10 pm
 If a number p is prime, and 2p+1 = q, where q is also prime, then the decimal expansion of 1/q will produce a decimal with q-1 digits. If this method produces a decimal with 166 digits, what is the units digit of the product of p and q?

A. 1
B. 3
C. 5
D. 7
E. 9



OA E

Source: Veritas Prep
Please correct the OA, the correct answer is A
Please check here: https://gmatclub.com/forum/if-a-number- ... 93833.html
Top
Post new topic Post Reply
• Page 1 of 1